68415431 has 4 divisors (see below), whose sum is σ = 78189072. Its totient is φ = 58641792.

The previous prime is 68415377. The next prime is 68415433. The reversal of 68415431 is 13451486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13451486 = 2 ⋅6725743.

It is a cyclic number.

It is not a de Polignac number, because 68415431 - 2²² = 64221127 is a prime.

It is a super-2 number, since 2×68415431² = 9361342397831522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68415433) 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, 4886810 + ... + 4886823.

It is an arithmetic number, because the mean of its divisors is an integer number (19547268).

Almost surely, 2^68415431 is an apocalyptic number.

68415431 is a deficient number, since it is larger than the sum of its proper divisors (9773641).

68415431 is an equidigital number, since it uses as much as digits as its factorization.

68415431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773640.

The product of its digits is 11520, while the sum is 32.

The square root of 68415431 is about 8271.3621006458. The cubic root of 68415431 is about 408.9950222870.

The spelling of 68415431 in words is "sixty-eight million, four hundred fifteen thousand, four hundred thirty-one".