31210401044 has 12 divisors (see below), whose sum is σ = 54619521684. Its totient is φ = 15604823424.

The previous prime is 31210400989. The next prime is 31210401049. The reversal of 31210401044 is 44010401213.

It can be written as a sum of positive squares in 2 ways, for example, as 19337683600 + 11872717444 = 139060^2 + 108962^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210401049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181724 + ... + 308940.

It is an arithmetic number, because the mean of its divisors is an integer number (4551626807).

Almost surely, 2^31210401044 is an apocalyptic number.

It is an amenable number.

31210401044 is a deficient number, since it is larger than the sum of its proper divisors (23409120640).

31210401044 is a wasteful number, since it uses less digits than its factorization.

31210401044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188554 (or 188552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31210401044 its reverse (44010401213), we get a palindrome (75220802257).

The spelling of 31210401044 in words is "thirty-one billion, two hundred ten million, four hundred one thousand, forty-four".