31320100103 has 8 divisors (see below), whose sum is σ = 32051797008. Its totient is φ = 30588554304.

The previous prime is 31320100081. The next prime is 31320100117. The reversal of 31320100103 is 30100102313.

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

It is not a de Polignac number, because 31320100103 - 2¹² = 31320096007 is a prime.

It is a super-2 number, since 2×31320100103² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320100153) 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, 456101 + ... + 520257.

It is an arithmetic number, because the mean of its divisors is an integer number (4006474626).

Almost surely, 2^31320100103 is an apocalyptic number.

31320100103 is a deficient number, since it is larger than the sum of its proper divisors (731696905).

31320100103 is a wasteful number, since it uses less digits than its factorization.

31320100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75553.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31320100103 its reverse (30100102313), we get a palindrome (61420202416).

The spelling of 31320100103 in words is "thirty-one billion, three hundred twenty million, one hundred thousand, one hundred three".