10320231402 has 72 divisors (see below), whose sum is σ = 24376423500. Its totient is φ = 3154005504.

The previous prime is 10320231379. The next prime is 10320231407. The reversal of 10320231402 is 20413202301.

10320231402 is a `hidden beast` number, since 1 + 0 + 32 + 0 + 231 + 402 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 245893761 + 10074337641 = 15681^2 + 100371^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10320231407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 441874 + ... + 464642.

Almost surely, 2^10320231402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10320231402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12188211750).

10320231402 is an abundant number, since it is smaller than the sum of its proper divisors (14056192098).

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

10320231402 is a wasteful number, since it uses less digits than its factorization.

10320231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22952 (or 22936 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10320231402 its reverse (20413202301), we get a palindrome (30733433703).

The spelling of 10320231402 in words is "ten billion, three hundred twenty million, two hundred thirty-one thousand, four hundred two".