71461731 has 16 divisors (see below), whose sum is σ = 105499008. Its totient is φ = 42662400.

The previous prime is 71461723. The next prime is 71461739. The reversal of 71461731 is 13716417.

It is an interprime number because it is at equal distance from previous prime (71461723) and next prime (71461739).

It is not a de Polignac number, because 71461731 - 2³ = 71461723 is a prime.

It is a super-2 number, since 2×71461731² = 10213557995032722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71461739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13950 + ... + 18371.

It is an arithmetic number, because the mean of its divisors is an integer number (6593688).

Almost surely, 2^71461731 is an apocalyptic number.

71461731 is a deficient number, since it is larger than the sum of its proper divisors (34037277).

71461731 is a wasteful number, since it uses less digits than its factorization.

71461731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32402.

The product of its digits is 3528, while the sum is 30.

The square root of 71461731 is about 8453.5040663621. The cubic root of 71461731 is about 414.9774623654.

The spelling of 71461731 in words is "seventy-one million, four hundred sixty-one thousand, seven hundred thirty-one".