31234421023 has 4 divisors (see below), whose sum is σ = 33637068808. Its totient is φ = 28831773240.

The previous prime is 31234420999. The next prime is 31234421051. The reversal of 31234421023 is 32012443213.

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

It is a cyclic number.

It is not a de Polignac number, because 31234421023 - 2¹³ = 31234412831 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 (31234428023) 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, 1201323873 + ... + 1201323898.

It is an arithmetic number, because the mean of its divisors is an integer number (8409267202).

Almost surely, 2^31234421023 is an apocalyptic number.

31234421023 is a deficient number, since it is larger than the sum of its proper divisors (2402647785).

31234421023 is a wasteful number, since it uses less digits than its factorization.

31234421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402647784.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31234421023 its reverse (32012443213), we get a palindrome (63246864236).

The spelling of 31234421023 in words is "thirty-one billion, two hundred thirty-four million, four hundred twenty-one thousand, twenty-three".