1211434000 has 80 divisors (see below), whose sum is σ = 3347750016. Its totient is φ = 415344000.

The previous prime is 1211433941. The next prime is 1211434001. The reversal of 1211434000 is 4341121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×1211434000³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1211434001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29266 + ... + 57265.

Almost surely, 2^1211434000 is an apocalyptic number.

1211434000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211434000 is an abundant number, since it is smaller than the sum of its proper divisors (2136316016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211434000 is an equidigital number, since it uses as much as digits as its factorization.

1211434000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86561 (or 86545 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1211434000 is about 34805.6604591839. The cubic root of 1211434000 is about 1066.0230274973.

Adding to 1211434000 its reverse (4341121), we get a palindrome (1215775121).

The spelling of 1211434000 in words is "one billion, two hundred eleven million, four hundred thirty-four thousand".