31423223029 has 4 divisors (see below), whose sum is σ = 34279879680. Its totient is φ = 28566566380.

The previous prime is 31423223003. The next prime is 31423223071. The reversal of 31423223029 is 92032232413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92032232413 = 11 ⋅8366566583.

It is not a de Polignac number, because 31423223029 - 2¹¹ = 31423220981 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 (31423223099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428328309 + ... + 1428328330.

It is an arithmetic number, because the mean of its divisors is an integer number (8569969920).

Almost surely, 2^31423223029 is an apocalyptic number.

It is an amenable number.

31423223029 is a deficient number, since it is larger than the sum of its proper divisors (2856656651).

31423223029 is a wasteful number, since it uses less digits than its factorization.

31423223029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856656650.

The product of its (nonzero) digits is 15552, while the sum is 31.

It can be divided in two parts, 31423 and 223029, that added together give a palindrome (254452).

The spelling of 31423223029 in words is "thirty-one billion, four hundred twenty-three million, two hundred twenty-three thousand, twenty-nine".