31968119 has 4 divisors (see below), whose sum is σ = 31985640. Its totient is φ = 31950600.

The previous prime is 31968107. The next prime is 31968133. The reversal of 31968119 is 91186913.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31968119 - 2⁴ = 31968103 is a prime.

It is a super-2 number, since 2×31968119² = 2043921264796322, which 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 (31968199) 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, 5657 + ... + 9794.

It is an arithmetic number, because the mean of its divisors is an integer number (7996410).

Almost surely, 2^31968119 is an apocalyptic number.

31968119 is a deficient number, since it is larger than the sum of its proper divisors (17521).

31968119 is a wasteful number, since it uses less digits than its factorization.

31968119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17520.

The product of its digits is 11664, while the sum is 38.

The square root of 31968119 is about 5654.0356383737. The cubic root of 31968119 is about 317.3747421669.

The spelling of 31968119 in words is "thirty-one million, nine hundred sixty-eight thousand, one hundred nineteen".