31616103 has 4 divisors (see below), whose sum is σ = 42154808. Its totient is φ = 21077400.

The previous prime is 31616069. The next prime is 31616113. The reversal of 31616103 is 30161613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30161613 = 3 ⋅10053871.

It is not a de Polignac number, because 31616103 - 2⁸ = 31615847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31616103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31616113) 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, 5269348 + ... + 5269353.

It is an arithmetic number, because the mean of its divisors is an integer number (10538702).

Almost surely, 2^31616103 is an apocalyptic number.

31616103 is a deficient number, since it is larger than the sum of its proper divisors (10538705).

31616103 is a wasteful number, since it uses less digits than its factorization.

31616103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538704.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 31616103 is about 5622.8198441707. The cubic root of 31616103 is about 316.2055191128.

Adding to 31616103 its reverse (30161613), we get a palindrome (61777716).

It can be divided in two parts, 3161610 and 3, that added together give a palindrome (3161613).

The spelling of 31616103 in words is "thirty-one million, six hundred sixteen thousand, one hundred three".