7136431 has 2 divisors, whose sum is σ = 7136432. Its totient is φ = 7136430.

The previous prime is 7136429. The next prime is 7136443. The reversal of 7136431 is 1346317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7136431 - 2¹ = 7136429 is a prime.

It is a super-2 number, since 2×7136431² = 101857294835522, which contains 22 as substring.

Together with 7136429, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7136396 and 7136405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7136401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3568215 + 3568216.

It is an arithmetic number, because the mean of its divisors is an integer number (3568216).

Almost surely, 2^7136431 is an apocalyptic number.

7136431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7136431 is an equidigital number, since it uses as much as digits as its factorization.

7136431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 7136431 is about 2671.4099273605. The cubic root of 7136431 is about 192.5279073499.

The spelling of 7136431 in words is "seven million, one hundred thirty-six thousand, four hundred thirty-one".