20346508131 has 8 divisors (see below), whose sum is σ = 28556502720. Its totient is φ = 12850426152.

The previous prime is 20346508121. The next prime is 20346508151. The reversal of 20346508131 is 13180564302.

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

It is not a de Polignac number, because 20346508131 - 2⁷ = 20346508003 is a prime.

It is a super-2 number, since 2×20346508131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20346508092 and 20346508101.

It is not an unprimeable number, because it can be changed into a prime (20346508121) 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, 178478085 + ... + 178478198.

It is an arithmetic number, because the mean of its divisors is an integer number (3569562840).

Almost surely, 2^20346508131 is an apocalyptic number.

20346508131 is a deficient number, since it is larger than the sum of its proper divisors (8209994589).

20346508131 is a wasteful number, since it uses less digits than its factorization.

20346508131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356956305.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20346508131 in words is "twenty billion, three hundred forty-six million, five hundred eight thousand, one hundred thirty-one".