31616049 has 4 divisors (see below), whose sum is σ = 42154736. Its totient is φ = 21077364.

The previous prime is 31616047. The next prime is 31616059. The reversal of 31616049 is 94061613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94061613 = 3 ⋅31353871.

It is not a de Polignac number, because 31616049 - 2¹ = 31616047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31616041) 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, 5269339 + ... + 5269344.

It is an arithmetic number, because the mean of its divisors is an integer number (10538684).

Almost surely, 2^31616049 is an apocalyptic number.

It is an amenable number.

31616049 is a deficient number, since it is larger than the sum of its proper divisors (10538687).

31616049 is a wasteful number, since it uses less digits than its factorization.

31616049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538686.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 31616049 is about 5622.8150423075. The cubic root of 31616049 is about 316.2053390874.

It can be divided in two parts, 3161604 and 9, that added together give a palindrome (3161613).

The spelling of 31616049 in words is "thirty-one million, six hundred sixteen thousand, forty-nine".