1253454731 has 2 divisors, whose sum is σ = 1253454732. Its totient is φ = 1253454730.

The previous prime is 1253454707. The next prime is 1253454781. The reversal of 1253454731 is 1374543521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253454731 is a prime.

It is a super-2 number, since 2×1253454731² = 3142297525332564722, 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 = 1253454691 and 1253454700.

It is not a weakly prime, because it can be changed into another prime (1253454781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626727365 + 626727366.

It is an arithmetic number, because the mean of its divisors is an integer number (626727366).

Almost surely, 2^1253454731 is an apocalyptic number.

1253454731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253454731 is an equidigital number, since it uses as much as digits as its factorization.

1253454731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 1253454731 is about 35404.1626224940. The cubic root of 1253454731 is about 1078.2088311329.

The spelling of 1253454731 in words is "one billion, two hundred fifty-three million, four hundred fifty-four thousand, seven hundred thirty-one".