20400231401 has 8 divisors (see below), whose sum is σ = 22256091264. Its totient is φ = 18544587120.

The previous prime is 20400231329. The next prime is 20400231437. The reversal of 20400231401 is 10413200402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20400231401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20400231401.

It is not an unprimeable number, because it can be changed into a prime (20400231601) 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, 193280 + ... + 279566.

It is an arithmetic number, because the mean of its divisors is an integer number (2782011408).

Almost surely, 2^20400231401 is an apocalyptic number.

It is an amenable number.

20400231401 is a deficient number, since it is larger than the sum of its proper divisors (1855859863).

20400231401 is a wasteful number, since it uses less digits than its factorization.

20400231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107791.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20400231401 its reverse (10413200402), we get a palindrome (30813431803).

The spelling of 20400231401 in words is "twenty billion, four hundred million, two hundred thirty-one thousand, four hundred one".