1251314143531 has 2 divisors, whose sum is σ = 1251314143532. Its totient is φ = 1251314143530.

The previous prime is 1251314143487. The next prime is 1251314143537. The reversal of 1251314143531 is 1353414131521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1251314143531 - 2¹³ = 1251314135339 is a prime.

It is a super-2 number, since 2×1251314143531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1251314143537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625657071765 + 625657071766.

It is an arithmetic number, because the mean of its divisors is an integer number (625657071766).

Almost surely, 2^{1251314143531} is an apocalyptic number.

1251314143531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251314143531 is an equidigital number, since it uses as much as digits as its factorization.

1251314143531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The spelling of 1251314143531 in words is "one trillion, two hundred fifty-one billion, three hundred fourteen million, one hundred forty-three thousand, five hundred thirty-one".