1020311312 has 10 divisors (see below), whose sum is σ = 1976853198. Its totient is φ = 510155648.

The previous prime is 1020311293. The next prime is 1020311317. The reversal of 1020311312 is 2131130201.

It can be written as a sum of positive squares in only one way, i.e., 1017865216 + 2446096 = 31904^2 + 1564^2 .

It is a super-2 number, since 2×1020311312² = 2082070346790322688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020311317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31884713 + ... + 31884744.

Almost surely, 2^1020311312 is an apocalyptic number.

It is an amenable number.

1020311312 is a deficient number, since it is larger than the sum of its proper divisors (956541886).

1020311312 is an equidigital number, since it uses as much as digits as its factorization.

1020311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63769465 (or 63769459 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1020311312 is about 31942.3122519332. The cubic root of 1020311312 is about 1006.7251088585.

Adding to 1020311312 its reverse (2131130201), we get a palindrome (3151441513).

The spelling of 1020311312 in words is "one billion, twenty million, three hundred eleven thousand, three hundred twelve".