675321931 has 4 divisors (see below), whose sum is σ = 675376600. Its totient is φ = 675267264.

The previous prime is 675321917. The next prime is 675321937. The reversal of 675321931 is 139123576.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 675321931 - 2²¹ = 673224779 is a prime.

It is a super-2 number, since 2×675321931² = 912119420979137522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (675321937) 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, 955 + ... + 36763.

It is an arithmetic number, because the mean of its divisors is an integer number (168844150).

Almost surely, 2^675321931 is an apocalyptic number.

675321931 is a deficient number, since it is larger than the sum of its proper divisors (54669).

675321931 is a wasteful number, since it uses less digits than its factorization.

675321931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54668.

The product of its digits is 34020, while the sum is 37.

The square root of 675321931 is about 25986.9569399728. The cubic root of 675321931 is about 877.3447558850.

The spelling of 675321931 in words is "six hundred seventy-five million, three hundred twenty-one thousand, nine hundred thirty-one".