31740994 has 4 divisors (see below), whose sum is σ = 47611494. Its totient is φ = 15870496.

The previous prime is 31740979. The next prime is 31741033. The reversal of 31740994 is 49904713.

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

It can be written as a sum of positive squares in only one way, i.e., 31505769 + 235225 = 5613^2 + 485^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7935247 + ... + 7935250.

Almost surely, 2^31740994 is an apocalyptic number.

31740994 is a deficient number, since it is larger than the sum of its proper divisors (15870500).

31740994 is a wasteful number, since it uses less digits than its factorization.

31740994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870499.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 31740994 is about 5633.9146248412. The cubic root of 31740994 is about 316.6213339847.

The spelling of 31740994 in words is "thirty-one million, seven hundred forty thousand, nine hundred ninety-four".