31204214031 has 32 divisors (see below), whose sum is σ = 43055534592. Its totient is φ = 20088714240.

The previous prime is 31204214023. The next prime is 31204214047. The reversal of 31204214031 is 13041240213.

It is not a de Polignac number, because 31204214031 - 2³ = 31204214023 is a prime.

It is a super-4 number, since 4×31204214031⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 31204213989 and 31204214007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204214021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18109536 + ... + 18111258.

It is an arithmetic number, because the mean of its divisors is an integer number (1345485456).

Almost surely, 2^31204214031 is an apocalyptic number.

31204214031 is a deficient number, since it is larger than the sum of its proper divisors (11851320561).

31204214031 is a wasteful number, since it uses less digits than its factorization.

31204214031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31204214031 its reverse (13041240213), we get a palindrome (44245454244).

The spelling of 31204214031 in words is "thirty-one billion, two hundred four million, two hundred fourteen thousand, thirty-one".