20401013433131 has 8 divisors (see below), whose sum is σ = 21004683394464. Its totient is φ = 19802395103680.

The previous prime is 20401013433091. The next prime is 20401013433161. The reversal of 20401013433131 is 13133431010402.

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 20401013433131 - 2⁶ = 20401013433067 is a prime.

It is a super-2 number, since 2×20401013433131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401013433131.

It is not an unprimeable number, because it can be changed into a prime (20401013433161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262899775 + ... + 1262915928.

It is an arithmetic number, because the mean of its divisors is an integer number (2625585424308).

Almost surely, 2^{20401013433131} is an apocalyptic number.

20401013433131 is a deficient number, since it is larger than the sum of its proper divisors (603669961333).

20401013433131 is a wasteful number, since it uses less digits than its factorization.

20401013433131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525815941.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20401013433131 its reverse (13133431010402), we get a palindrome (33534444443533).

The spelling of 20401013433131 in words is "twenty trillion, four hundred one billion, thirteen million, four hundred thirty-three thousand, one hundred thirty-one".