21114131 has 12 divisors (see below), whose sum is σ = 22116096. Its totient is φ = 20154960.

The previous prime is 21114127. The next prime is 21114143. The reversal of 21114131 is 13141112.

It is not a de Polignac number, because 21114131 - 2² = 21114127 is a prime.

It is a super-2 number, since 2×21114131² = 891613055770322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121961 + ... + 122133.

It is an arithmetic number, because the mean of its divisors is an integer number (1843008).

Almost surely, 2^21114131 is an apocalyptic number.

21114131 is a deficient number, since it is larger than the sum of its proper divisors (1001965).

21114131 is a wasteful number, since it uses less digits than its factorization.

21114131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 331 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 21114131 is about 4595.0115342619. The cubic root of 21114131 is about 276.3913224888.

Adding to 21114131 its reverse (13141112), we get a palindrome (34255243).

The spelling of 21114131 in words is "twenty-one million, one hundred fourteen thousand, one hundred thirty-one".