31123013102 has 8 divisors (see below), whose sum is σ = 46694422512. Its totient is φ = 15558205600.

The previous prime is 31123013093. The next prime is 31123013161. The reversal of 31123013102 is 20131032113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 1638674 + ... + 1657557.

It is an arithmetic number, because the mean of its divisors is an integer number (5836802814).

Almost surely, 2^31123013102 is an apocalyptic number.

31123013102 is a deficient number, since it is larger than the sum of its proper divisors (15571409410).

31123013102 is a wasteful number, since it uses less digits than its factorization.

31123013102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300954.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31123013102 its reverse (20131032113), we get a palindrome (51254045215).

The spelling of 31123013102 in words is "thirty-one billion, one hundred twenty-three million, thirteen thousand, one hundred two".