31003431044 has 12 divisors (see below), whose sum is σ = 54763070544. Its totient is φ = 15356839464.

The previous prime is 31003431007. The next prime is 31003431061. The reversal of 31003431044 is 44013430013.

It is a super-2 number, since 2×31003431044² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36218534 + ... + 36219389.

It is an arithmetic number, because the mean of its divisors is an integer number (4563589212).

Almost surely, 2^31003431044 is an apocalyptic number.

It is an amenable number.

31003431044 is a deficient number, since it is larger than the sum of its proper divisors (23759639500).

31003431044 is a wasteful number, since it uses less digits than its factorization.

31003431044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72438034 (or 72438032 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31003431044 its reverse (44013430013), we get a palindrome (75016861057).

The spelling of 31003431044 in words is "thirty-one billion, three million, four hundred thirty-one thousand, forty-four".