402430140331 has 4 divisors (see below), whose sum is σ = 402927582600. Its totient is φ = 401932698064.

The previous prime is 402430140271. The next prime is 402430140341. The reversal of 402430140331 is 133041034204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402430140331 - 2²⁷ = 402295922603 is a prime.

It is a super-2 number, since 2×402430140331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402430140296 and 402430140305.

It is not an unprimeable number, because it can be changed into a prime (402430140341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248719921 + ... + 248721538.

It is an arithmetic number, because the mean of its divisors is an integer number (100731895650).

Almost surely, 2^402430140331 is an apocalyptic number.

402430140331 is a deficient number, since it is larger than the sum of its proper divisors (497442269).

402430140331 is an equidigital number, since it uses as much as digits as its factorization.

402430140331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497442268.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 402430140331 its reverse (133041034204), we get a palindrome (535471174535).

The spelling of 402430140331 in words is "four hundred two billion, four hundred thirty million, one hundred forty thousand, three hundred thirty-one".