31961494 has 4 divisors (see below), whose sum is σ = 47942244. Its totient is φ = 15980746.

The previous prime is 31961483. The next prime is 31961497. The reversal of 31961494 is 49416913.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31961497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7990372 + ... + 7990375.

It is an arithmetic number, because the mean of its divisors is an integer number (11985561).

Almost surely, 2^31961494 is an apocalyptic number.

31961494 is a deficient number, since it is larger than the sum of its proper divisors (15980750).

31961494 is a wasteful number, since it uses less digits than its factorization.

31961494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15980749.

The product of its digits is 23328, while the sum is 37.

The square root of 31961494 is about 5653.4497432983. The cubic root of 31961494 is about 317.3528166466.

The spelling of 31961494 in words is "thirty-one million, nine hundred sixty-one thousand, four hundred ninety-four".