71473931 has 2 divisors, whose sum is σ = 71473932. Its totient is φ = 71473930.

The previous prime is 71473921. The next prime is 71473937. The reversal of 71473931 is 13937417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71473931 - 2⁶ = 71473867 is a prime.

It is a super-2 number, since 2×71473931² = 10217045625185522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 71473891 and 71473900.

It is not a weakly prime, because it can be changed into another prime (71473937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35736965 + 35736966.

It is an arithmetic number, because the mean of its divisors is an integer number (35736966).

Almost surely, 2^71473931 is an apocalyptic number.

71473931 is a deficient number, since it is larger than the sum of its proper divisors (1).

71473931 is an equidigital number, since it uses as much as digits as its factorization.

71473931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 71473931 is about 8454.2256298256. The cubic root of 71473931 is about 415.0010761089.

The spelling of 71473931 in words is "seventy-one million, four hundred seventy-three thousand, nine hundred thirty-one".