973209431 has 6 divisors (see below), whose sum is σ = 1027127232. Its totient is φ = 921987540.

The previous prime is 973209427. The next prime is 973209487. The reversal of 973209431 is 134902379.

It is not a de Polignac number, because 973209431 - 2² = 973209427 is a prime.

It is a super-2 number, since 2×973209431² = 1894273193174687522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973209031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1347575 + ... + 1348296.

It is an arithmetic number, because the mean of its divisors is an integer number (171187872).

Almost surely, 2^973209431 is an apocalyptic number.

973209431 is a deficient number, since it is larger than the sum of its proper divisors (53917801).

973209431 is a wasteful number, since it uses less digits than its factorization.

973209431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695909 (or 2695890 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 973209431 is about 31196.3047651481. The cubic root of 973209431 is about 990.9888534756.

The spelling of 973209431 in words is "nine hundred seventy-three million, two hundred nine thousand, four hundred thirty-one".