31402044031 has 2 divisors, whose sum is σ = 31402044032. Its totient is φ = 31402044030.

The previous prime is 31402044007. The next prime is 31402044119. The reversal of 31402044031 is 13044020413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31402044031 - 2¹³ = 31402035839 is a prime.

It is a super-2 number, since 2×31402044031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31402043993 and 31402044011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31402044001) 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, 15701022015 + 15701022016.

It is an arithmetic number, because the mean of its divisors is an integer number (15701022016).

Almost surely, 2^31402044031 is an apocalyptic number.

31402044031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31402044031 is an equidigital number, since it uses as much as digits as its factorization.

31402044031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31402044031 its reverse (13044020413), we get a palindrome (44446064444).

The spelling of 31402044031 in words is "thirty-one billion, four hundred two million, forty-four thousand, thirty-one".