10402405031 has 4 divisors (see below), whose sum is σ = 10459877064. Its totient is φ = 10344933000.

The previous prime is 10402405003. The next prime is 10402405087. The reversal of 10402405031 is 13050420401.

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 10402405031 - 2²² = 10398210727 is a prime.

It is a super-2 number, since 2×10402405031² (a number of 21 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 = 10402404994 and 10402405012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402405831) 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, 28735745 + ... + 28736106.

It is an arithmetic number, because the mean of its divisors is an integer number (2614969266).

Almost surely, 2^10402405031 is an apocalyptic number.

10402405031 is a deficient number, since it is larger than the sum of its proper divisors (57472033).

10402405031 is an equidigital number, since it uses as much as digits as its factorization.

10402405031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57472032.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 10402405031 its reverse (13050420401), we get a palindrome (23452825432).

The spelling of 10402405031 in words is "ten billion, four hundred two million, four hundred five thousand, thirty-one".