20031001312 has 24 divisors (see below), whose sum is σ = 45069753456. Its totient is φ = 8584714752.

The previous prime is 20031001303. The next prime is 20031001327. The reversal of 20031001312 is 21310013002.

It is a super-2 number, since 2×20031001312² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20031001292 and 20031001301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44711833 + ... + 44712280.

It is an arithmetic number, because the mean of its divisors is an integer number (1877906394).

Almost surely, 2^20031001312 is an apocalyptic number.

It is an amenable number.

20031001312 is an abundant number, since it is smaller than the sum of its proper divisors (25038752144).

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

20031001312 is an equidigital number, since it uses as much as digits as its factorization.

20031001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89424130 (or 89424122 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20031001312 its reverse (21310013002), we get a palindrome (41341014314).

The spelling of 20031001312 in words is "twenty billion, thirty-one million, one thousand, three hundred twelve".