461312640031 has 2 divisors, whose sum is σ = 461312640032. Its totient is φ = 461312640030.

The previous prime is 461312639987. The next prime is 461312640043. The reversal of 461312640031 is 130046213164.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 461312640031 - 2¹¹ = 461312637983 is a prime.

It is a super-2 number, since 2×461312640031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 461312639975 and 461312640002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461312640071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230656320015 + 230656320016.

It is an arithmetic number, because the mean of its divisors is an integer number (230656320016).

Almost surely, 2^461312640031 is an apocalyptic number.

461312640031 is a deficient number, since it is larger than the sum of its proper divisors (1).

461312640031 is an equidigital number, since it uses as much as digits as its factorization.

461312640031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

Subtracting from 461312640031 its sum of digits (31), we obtain a square (461312640000 = 679200²).

Adding to 461312640031 its reverse (130046213164), we get a palindrome (591358853195).

The spelling of 461312640031 in words is "four hundred sixty-one billion, three hundred twelve million, six hundred forty thousand, thirty-one".