31311322103 has 8 divisors (see below), whose sum is σ = 32078120256. Its totient is φ = 30544672000.

The previous prime is 31311322079. The next prime is 31311322111. The reversal of 31311322103 is 30122311313.

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

It is not a de Polignac number, because 31311322103 - 2¹⁶ = 31311256567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311322183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477650 + ... + 539232.

It is an arithmetic number, because the mean of its divisors is an integer number (4009765032).

Almost surely, 2^31311322103 is an apocalyptic number.

31311322103 is a deficient number, since it is larger than the sum of its proper divisors (766798153).

31311322103 is a wasteful number, since it uses less digits than its factorization.

31311322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74025.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31311322103 its reverse (30122311313), we get a palindrome (61433633416).

The spelling of 31311322103 in words is "thirty-one billion, three hundred eleven million, three hundred twenty-two thousand, one hundred three".