6971431 has 2 divisors, whose sum is σ = 6971432. Its totient is φ = 6971430.

The previous prime is 6971401. The next prime is 6971441. The reversal of 6971431 is 1341796.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6971431 - 2⁵ = 6971399 is a prime.

It is a super-2 number, since 2×6971431² = 97201700375522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6971393 and 6971402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6971401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3485715 + 3485716.

It is an arithmetic number, because the mean of its divisors is an integer number (3485716).

Almost surely, 2^6971431 is an apocalyptic number.

6971431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6971431 is an equidigital number, since it uses as much as digits as its factorization.

6971431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 6971431 is about 2640.3467575302. The cubic root of 6971431 is about 191.0325228099.

The spelling of 6971431 in words is "six million, nine hundred seventy-one thousand, four hundred thirty-one".