973640735231 has 4 divisors (see below), whose sum is σ = 974951154192. Its totient is φ = 972330316272.

The previous prime is 973640735183. The next prime is 973640735267. The reversal of 973640735231 is 132537046379.

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

It is a cyclic number.

It is not a de Polignac number, because 973640735231 - 2²⁶ = 973573626367 is a prime.

It is a super-2 number, since 2×973640735231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 973640735231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973640735281) 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, 655208366 + ... + 655209851.

It is an arithmetic number, because the mean of its divisors is an integer number (243737788548).

Almost surely, 2^973640735231 is an apocalyptic number.

973640735231 is a deficient number, since it is larger than the sum of its proper divisors (1310418961).

973640735231 is a wasteful number, since it uses less digits than its factorization.

973640735231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310418960.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 973640735231 in words is "nine hundred seventy-three billion, six hundred forty million, seven hundred thirty-five thousand, two hundred thirty-one".