10402323131020 has 96 divisors (see below), whose sum is σ = 23055091637760. Its totient is φ = 3934563156480.

The previous prime is 10402323131003. The next prime is 10402323131021. The reversal of 10402323131020 is 2013132320401.

It is a junction number, because it is equal to n+sod(n) for n = 10402323130982 and 10402323131000.

It is not an unprimeable number, because it can be changed into a prime (10402323131021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250982419 + ... + 251023861.

It is an arithmetic number, because the mean of its divisors is an integer number (240157204560).

Almost surely, 2^{10402323131020} is an apocalyptic number.

10402323131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10402323131020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11527545818880).

10402323131020 is an abundant number, since it is smaller than the sum of its proper divisors (12652768506740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10402323131020 is a wasteful number, since it uses less digits than its factorization.

10402323131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47695 (or 47693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 10402323131020 its reverse (2013132320401), we get a palindrome (12415455451421).

The spelling of 10402323131020 in words is "ten trillion, four hundred two billion, three hundred twenty-three million, one hundred thirty-one thousand, twenty".