31679701 has 4 divisors (see below), whose sum is σ = 31694092. Its totient is φ = 31665312.

The previous prime is 31679699. The next prime is 31679723. The reversal of 31679701 is 10797613.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29691601 + 1988100 = 5449^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 31679701 - 2¹ = 31679699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31679201) 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, 3126 + ... + 8551.

It is an arithmetic number, because the mean of its divisors is an integer number (7923523).

Almost surely, 2^31679701 is an apocalyptic number.

It is an amenable number.

31679701 is a deficient number, since it is larger than the sum of its proper divisors (14391).

31679701 is a wasteful number, since it uses less digits than its factorization.

31679701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14390.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 31679701 is about 5628.4723504695. The cubic root of 31679701 is about 316.4174002694.

The spelling of 31679701 in words is "thirty-one million, six hundred seventy-nine thousand, seven hundred one".