23390381970 has 24 divisors (see below), whose sum is σ = 60814993356. Its totient is φ = 6237435168.

The previous prime is 23390381969. The next prime is 23390381999. The reversal of 23390381970 is 7918309332.

It can be written as a sum of positive squares in 2 ways, for example, as 21045595041 + 2344786929 = 145071^2 + 48423^2 .

It is a super-3 number, since 3×23390381970³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129946477 + ... + 129946656.

Almost surely, 2^23390381970 is an apocalyptic number.

23390381970 is an abundant number, since it is smaller than the sum of its proper divisors (37424611386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23390381970 is a wasteful number, since it uses less digits than its factorization.

23390381970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259893146 (or 259893143 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 23390381970 in words is "twenty-three billion, three hundred ninety million, three hundred eighty-one thousand, nine hundred seventy".