20231601390 has 256 divisors, whose sum is σ = 72438589440. Its totient is φ = 3880535040.

The previous prime is 20231601359. The next prime is 20231601421. The reversal of 20231601390 is 9310613202.

20231601390 is a `hidden beast` number, since 2 + 0 + 23 + 1 + 601 + 39 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20231601359) and next prime (20231601421).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 232842 + ... + 307698.

It is an arithmetic number, because the mean of its divisors is an integer number (282963240).

Almost surely, 2^20231601390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231601390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36219294720).

20231601390 is an abundant number, since it is smaller than the sum of its proper divisors (52206988050).

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

20231601390 is a wasteful number, since it uses less digits than its factorization.

20231601390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74904 (or 74898 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 20231601390 in words is "twenty billion, two hundred thirty-one million, six hundred one thousand, three hundred ninety".