31423134012 has 24 divisors (see below), whose sum is σ = 73880349312. Its totient is φ = 10394420400.

The previous prime is 31423133953. The next prime is 31423134031. The reversal of 31423134012 is 21043132413.

It is a happy number.

It is a super-2 number, since 2×31423134012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9993064 + ... + 9996207.

It is an arithmetic number, because the mean of its divisors is an integer number (3078347888).

Almost surely, 2^31423134012 is an apocalyptic number.

It is an amenable number.

31423134012 is an abundant number, since it is smaller than the sum of its proper divisors (42457215300).

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

31423134012 is a wasteful number, since it uses less digits than its factorization.

31423134012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19989409 (or 19989407 counting only the distinct ones).

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

Adding to 31423134012 its reverse (21043132413), we get a palindrome (52466266425).

The spelling of 31423134012 in words is "thirty-one billion, four hundred twenty-three million, one hundred thirty-four thousand, twelve".