1312213024 has 12 divisors (see below), whose sum is σ = 2583419454. Its totient is φ = 656106496.

The previous prime is 1312213013. The next prime is 1312213031. The reversal of 1312213024 is 4203122131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 693795600 + 618417424 = 26340^2 + 24868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312212992 and 1312213010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20503297 + ... + 20503360.

Almost surely, 2^1312213024 is an apocalyptic number.

It is an amenable number.

1312213024 is a deficient number, since it is larger than the sum of its proper divisors (1271206430).

1312213024 is an equidigital number, since it uses as much as digits as its factorization.

1312213024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41006667 (or 41006659 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1312213024 is about 36224.4810038736. The cubic root of 1312213024 is about 1094.7999812579.

Adding to 1312213024 its reverse (4203122131), we get a palindrome (5515335155).

The spelling of 1312213024 in words is "one billion, three hundred twelve million, two hundred thirteen thousand, twenty-four".