31424013312 has 44 divisors (see below), whose sum is σ = 83756460336. Its totient is φ = 10474670080.

The previous prime is 31424013311. The next prime is 31424013317. The reversal of 31424013312 is 21331042413.

It is a happy number.

It is a super-2 number, since 2×31424013312² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31424013311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5111514 + ... + 5117657.

Almost surely, 2^31424013312 is an apocalyptic number.

31424013312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31424013312 is an abundant number, since it is smaller than the sum of its proper divisors (52332447024).

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

31424013312 is a wasteful number, since it uses less digits than its factorization.

31424013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10229194 (or 10229176 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31424013312 its reverse (21331042413), we get a palindrome (52755055725).

The spelling of 31424013312 in words is "thirty-one billion, four hundred twenty-four million, thirteen thousand, three hundred twelve".