31242252124 has 48 divisors (see below), whose sum is σ = 57387972096. Its totient is φ = 14853960000.

The previous prime is 31242252089. The next prime is 31242252187. The reversal of 31242252124 is 42125224213.

It is a super-2 number, since 2×31242252124² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31242252092 and 31242252101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16786954 + ... + 16788814.

It is an arithmetic number, because the mean of its divisors is an integer number (1195582752).

Almost surely, 2^31242252124 is an apocalyptic number.

It is an amenable number.

31242252124 is a deficient number, since it is larger than the sum of its proper divisors (26145719972).

31242252124 is a wasteful number, since it uses less digits than its factorization.

31242252124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

Adding to 31242252124 its reverse (42125224213), we get a palindrome (73367476337).

The spelling of 31242252124 in words is "thirty-one billion, two hundred forty-two million, two hundred fifty-two thousand, one hundred twenty-four".