69320431 has 4 divisors (see below), whose sum is σ = 69361600. Its totient is φ = 69279264.

The previous prime is 69320399. The next prime is 69320453. The reversal of 69320431 is 13402396.

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 69320431 - 2⁵ = 69320399 is a prime.

It is a super-2 number, since 2×69320431² = 9610644308051522, which 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 69320431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69320491) 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, 17946 + ... + 21463.

It is an arithmetic number, because the mean of its divisors is an integer number (17340400).

Almost surely, 2^69320431 is an apocalyptic number.

69320431 is a deficient number, since it is larger than the sum of its proper divisors (41169).

69320431 is a wasteful number, since it uses less digits than its factorization.

69320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41168.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 69320431 is about 8325.8892017610. The cubic root of 69320431 is about 410.7905251676.

It can be divided in two parts, 69320 and 431, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 69320431 in words is "sixty-nine million, three hundred twenty thousand, four hundred thirty-one".