68473431 has 20 divisors (see below), whose sum is σ = 110157432. Its totient is φ = 42136848.

The previous prime is 68473429. The next prime is 68473439. The reversal of 68473431 is 13437486.

It is not a de Polignac number, because 68473431 - 2¹ = 68473429 is a prime.

It is a super-2 number, since 2×68473431² = 9377221505823522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68473439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31461 + ... + 33566.

Almost surely, 2^68473431 is an apocalyptic number.

68473431 is a deficient number, since it is larger than the sum of its proper divisors (41684001).

68473431 is a wasteful number, since it uses less digits than its factorization.

68473431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65052 (or 65043 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 68473431 is about 8274.8674309623. The cubic root of 68473431 is about 409.1105664494.

The spelling of 68473431 in words is "sixty-eight million, four hundred seventy-three thousand, four hundred thirty-one".