31004220424 has 32 divisors (see below), whose sum is σ = 61771620600. Its totient is φ = 14538280960.

The previous prime is 31004220419. The next prime is 31004220437. The reversal of 31004220424 is 42402240013.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30705552900 + 298667524 = 175230^2 + 17282^2 .

It is a super-2 number, since 2×31004220424² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31004220395 and 31004220404.

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, 367429 + ... + 443860.

Almost surely, 2^31004220424 is an apocalyptic number.

31004220424 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31004220424 is a deficient number, since it is larger than the sum of its proper divisors (30767400176).

31004220424 is a wasteful number, since it uses less digits than its factorization.

31004220424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811593 (or 811589 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31004220424 its reverse (42402240013), we get a palindrome (73406460437).

The spelling of 31004220424 in words is "thirty-one billion, four million, two hundred twenty thousand, four hundred twenty-four".