31423033201439 has 4 divisors (see below), whose sum is σ = 34279672583400. Its totient is φ = 28566393819480.

The previous prime is 31423033201387. The next prime is 31423033201451. The reversal of 31423033201439 is 93410233032413.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-31423033201439 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 (31423033201139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428319690964 + ... + 1428319690985.

It is an arithmetic number, because the mean of its divisors is an integer number (8569918145850).

Almost surely, 2^{31423033201439} is an apocalyptic number.

31423033201439 is a deficient number, since it is larger than the sum of its proper divisors (2856639381961).

31423033201439 is a wasteful number, since it uses less digits than its factorization.

31423033201439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856639381960.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 31423033201439 in words is "thirty-one trillion, four hundred twenty-three billion, thirty-three million, two hundred one thousand, four hundred thirty-nine".