20740190431 has 8 divisors (see below), whose sum is σ = 21410956800. Its totient is φ = 20069532120.

The previous prime is 20740190399. The next prime is 20740190437. The reversal of 20740190431 is 13409104702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20740190431 - 2⁵ = 20740190399 is a prime.

It is a super-2 number, since 2×20740190431² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20740190393 and 20740190402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740190437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579660 + ... + 614398.

It is an arithmetic number, because the mean of its divisors is an integer number (2676369600).

Almost surely, 2^20740190431 is an apocalyptic number.

20740190431 is a deficient number, since it is larger than the sum of its proper divisors (670766369).

20740190431 is a wasteful number, since it uses less digits than its factorization.

20740190431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54029.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 20740190431 in words is "twenty billion, seven hundred forty million, one hundred ninety thousand, four hundred thirty-one".