31422314431 has 2 divisors, whose sum is σ = 31422314432. Its totient is φ = 31422314430.

The previous prime is 31422314419. The next prime is 31422314471. The reversal of 31422314431 is 13441322413.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31422314431 - 2⁷ = 31422314303 is a prime.

It is a super-2 number, since 2×31422314431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31422314431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31422314401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711157215 + 15711157216.

It is an arithmetic number, because the mean of its divisors is an integer number (15711157216).

Almost surely, 2^31422314431 is an apocalyptic number.

31422314431 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422314431 is an equidigital number, since it uses as much as digits as its factorization.

31422314431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

Adding to 31422314431 its reverse (13441322413), we get a palindrome (44863636844).

The spelling of 31422314431 in words is "thirty-one billion, four hundred twenty-two million, three hundred fourteen thousand, four hundred thirty-one".