31124144432 has 40 divisors (see below), whose sum is σ = 61426090800. Its totient is φ = 15274806272.

The previous prime is 31124144413. The next prime is 31124144449. The reversal of 31124144432 is 23444142113.

It is a junction number, because it is equal to n+sod(n) for n = 31124144395 and 31124144404.

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, 115319 + ... + 274857.

It is an arithmetic number, because the mean of its divisors is an integer number (1535652270).

Almost surely, 2^31124144432 is an apocalyptic number.

It is an amenable number.

31124144432 is a deficient number, since it is larger than the sum of its proper divisors (30301946368).

31124144432 is a wasteful number, since it uses less digits than its factorization.

31124144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159773 (or 159767 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

Adding to 31124144432 its reverse (23444142113), we get a palindrome (54568286545).

The spelling of 31124144432 in words is "thirty-one billion, one hundred twenty-four million, one hundred forty-four thousand, four hundred thirty-two".