23571430939 has 12 divisors (see below), whose sum is σ = 27499788624. Its totient is φ = 20204069256.

The previous prime is 23571430933. The next prime is 23571430957. The reversal of 23571430939 is 93903417532.

It is not a de Polignac number, because 23571430939 - 2¹³ = 23571422747 is a prime.

It is a super-2 number, since 2×23571430939² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23571430933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684432 + ... + 718045.

It is an arithmetic number, because the mean of its divisors is an integer number (2291649052).

Almost surely, 2^23571430939 is an apocalyptic number.

23571430939 is a deficient number, since it is larger than the sum of its proper divisors (3928357685).

23571430939 is an frugal number, since it uses more digits than its factorization.

23571430939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402512 (or 1402484 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 23571430939 in words is "twenty-three billion, five hundred seventy-one million, four hundred thirty thousand, nine hundred thirty-nine".