31402143079 has 4 divisors (see below), whose sum is σ = 33249327984. Its totient is φ = 29554958176.

The previous prime is 31402143061. The next prime is 31402143083. The reversal of 31402143079 is 97034120413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97034120413 = 84691 ⋅1145743.

It is a cyclic number.

It is not a de Polignac number, because 31402143079 - 2⁷ = 31402142951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402143779) 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 in 3 ways as a sum of consecutive naturals, for example, 923592427 + ... + 923592460.

It is an arithmetic number, because the mean of its divisors is an integer number (8312331996).

Almost surely, 2^31402143079 is an apocalyptic number.

31402143079 is a deficient number, since it is larger than the sum of its proper divisors (1847184905).

31402143079 is a wasteful number, since it uses less digits than its factorization.

31402143079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847184904.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 31402143079 in words is "thirty-one billion, four hundred two million, one hundred forty-three thousand, seventy-nine".