20340025531 has 8 divisors (see below), whose sum is σ = 23286458624. Its totient is φ = 17403771240.

The previous prime is 20340025529. The next prime is 20340025603. The reversal of 20340025531 is 13552004302.

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 20340025531 - 2¹ = 20340025529 is a prime.

It is a super-2 number, since 2×20340025531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20340025496 and 20340025505.

It is not an unprimeable number, because it can be changed into a prime (20340625531) 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, 2540415 + ... + 2548408.

It is an arithmetic number, because the mean of its divisors is an integer number (2910807328).

Almost surely, 2^20340025531 is an apocalyptic number.

20340025531 is a deficient number, since it is larger than the sum of its proper divisors (2946433093).

20340025531 is an equidigital number, since it uses as much as digits as its factorization.

20340025531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089401.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20340025531 its reverse (13552004302), we get a palindrome (33892029833).

The spelling of 20340025531 in words is "twenty billion, three hundred forty million, twenty-five thousand, five hundred thirty-one".