10431220402 has 4 divisors (see below), whose sum is σ = 15646830606. Its totient is φ = 5215610200.

The previous prime is 10431220363. The next prime is 10431220409. The reversal of 10431220402 is 20402213401.

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

It can be written as a sum of positive squares in only one way, i.e., 9797238361 + 633982041 = 98981^2 + 25179^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10431220402.

It is not an unprimeable number, because it can be changed into a prime (10431220409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2607805099 + ... + 2607805102.

Almost surely, 2^10431220402 is an apocalyptic number.

10431220402 is a deficient number, since it is larger than the sum of its proper divisors (5215610204).

10431220402 is an equidigital number, since it uses as much as digits as its factorization.

10431220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215610203.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10431220402 its reverse (20402213401), we get a palindrome (30833433803).

The spelling of 10431220402 in words is "ten billion, four hundred thirty-one million, two hundred twenty thousand, four hundred two".