65423931 has 8 divisors (see below), whose sum is σ = 87349584. Its totient is φ = 43557120.

The previous prime is 65423909. The next prime is 65423933. The reversal of 65423931 is 13932456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65423931 - 2⁶ = 65423867 is a prime.

It is a super-2 number, since 2×65423931² = 8560581494985522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65423892 and 65423901.

It is not an unprimeable number, because it can be changed into a prime (65423933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12046 + ... + 16611.

It is an arithmetic number, because the mean of its divisors is an integer number (10918698).

Almost surely, 2^65423931 is an apocalyptic number.

65423931 is a deficient number, since it is larger than the sum of its proper divisors (21925653).

65423931 is a wasteful number, since it uses less digits than its factorization.

65423931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29421.

The product of its digits is 19440, while the sum is 33.

The square root of 65423931 is about 8088.5061043434. The cubic root of 65423931 is about 402.9447902415.

The spelling of 65423931 in words is "sixty-five million, four hundred twenty-three thousand, nine hundred thirty-one".