20400231002 has 16 divisors (see below), whose sum is σ = 30659086752. Its totient is φ = 10180553040.

The previous prime is 20400230959. The next prime is 20400231023. The reversal of 20400231002 is 20013200402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3586853 + ... + 3592535.

It is an arithmetic number, because the mean of its divisors is an integer number (1916192922).

Almost surely, 2^20400231002 is an apocalyptic number.

20400231002 is a deficient number, since it is larger than the sum of its proper divisors (10258855750).

20400231002 is a wasteful number, since it uses less digits than its factorization.

20400231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8813.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20400231002 its reverse (20013200402), we get a palindrome (40413431404).

The spelling of 20400231002 in words is "twenty billion, four hundred million, two hundred thirty-one thousand, two".