71146631 has 2 divisors, whose sum is σ = 71146632. Its totient is φ = 71146630.

The previous prime is 71146627. The next prime is 71146633. The reversal of 71146631 is 13664117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71146631 - 2² = 71146627 is a prime.

It is a super-2 number, since 2×71146631² = 10123686205300322, which contains 22 as substring.

Together with 71146633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71146594 and 71146603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71146633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35573315 + 35573316.

It is an arithmetic number, because the mean of its divisors is an integer number (35573316).

Almost surely, 2^71146631 is an apocalyptic number.

71146631 is a deficient number, since it is larger than the sum of its proper divisors (1).

71146631 is an equidigital number, since it uses as much as digits as its factorization.

71146631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 71146631 is about 8434.8462345202. The cubic root of 71146631 is about 414.3666363244.

The spelling of 71146631 in words is "seventy-one million, one hundred forty-six thousand, six hundred thirty-one".