1351604531 has 2 divisors, whose sum is σ = 1351604532. Its totient is φ = 1351604530.

The previous prime is 1351604491. The next prime is 1351604543. The reversal of 1351604531 is 1354061531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351604531 - 2²² = 1347410227 is a prime.

It is a super-2 number, since 2×1351604531² = 3653669616439459922, 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 = 1351604494 and 1351604503.

It is not a weakly prime, because it can be changed into another prime (1351624531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675802265 + 675802266.

It is an arithmetic number, because the mean of its divisors is an integer number (675802266).

Almost surely, 2^1351604531 is an apocalyptic number.

1351604531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351604531 is an equidigital number, since it uses as much as digits as its factorization.

1351604531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1351604531 is about 36764.1745589371. The cubic root of 1351604531 is about 1105.6471386595.

The spelling of 1351604531 in words is "one billion, three hundred fifty-one million, six hundred four thousand, five hundred thirty-one".