395131142431 has 2 divisors, whose sum is σ = 395131142432. Its totient is φ = 395131142430.

The previous prime is 395131142389. The next prime is 395131142459. The reversal of 395131142431 is 134241131593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 395131142431 - 2³¹ = 392983658783 is a prime.

It is a super-2 number, since 2×395131142431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395131142831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197565571215 + 197565571216.

It is an arithmetic number, because the mean of its divisors is an integer number (197565571216).

Almost surely, 2^395131142431 is an apocalyptic number.

395131142431 is a deficient number, since it is larger than the sum of its proper divisors (1).

395131142431 is an equidigital number, since it uses as much as digits as its factorization.

395131142431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The spelling of 395131142431 in words is "three hundred ninety-five billion, one hundred thirty-one million, one hundred forty-two thousand, four hundred thirty-one".