31133100424 has 32 divisors (see below), whose sum is σ = 59631667200. Its totient is φ = 15231490560.

The previous prime is 31133100409. The next prime is 31133100443. The reversal of 31133100424 is 42400133113.

It is a junction number, because it is equal to n+sod(n) for n = 31133100395 and 31133100404.

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, 1977817 + ... + 1993495.

It is an arithmetic number, because the mean of its divisors is an integer number (1863489600).

Almost surely, 2^31133100424 is an apocalyptic number.

It is an amenable number.

31133100424 is a deficient number, since it is larger than the sum of its proper divisors (28498566776).

31133100424 is a wasteful number, since it uses less digits than its factorization.

31133100424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21013 (or 21009 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31133100424 its reverse (42400133113), we get a palindrome (73533233537).

The spelling of 31133100424 in words is "thirty-one billion, one hundred thirty-three million, one hundred thousand, four hundred twenty-four".