131463457 has 2 divisors, whose sum is σ = 131463458. Its totient is φ = 131463456.

The previous prime is 131463433. The next prime is 131463461. The reversal of 131463457 is 754364131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115971361 + 15492096 = 10769^2 + 3936^2 .

It is an emirp because it is prime and its reverse (754364131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131463457 is a prime.

It is not a weakly prime, because it can be changed into another prime (131463407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65731728 + 65731729.

It is an arithmetic number, because the mean of its divisors is an integer number (65731729).

Almost surely, 2^131463457 is an apocalyptic number.

It is an amenable number.

131463457 is a deficient number, since it is larger than the sum of its proper divisors (1).

131463457 is an equidigital number, since it uses as much as digits as its factorization.

131463457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 131463457 is about 11465.7514799511. The cubic root of 131463457 is about 508.4735300368.

The spelling of 131463457 in words is "one hundred thirty-one million, four hundred sixty-three thousand, four hundred fifty-seven".