10403131397 has 4 divisors (see below), whose sum is σ = 10405200960. Its totient is φ = 10401061836.

The previous prime is 10403131393. The next prime is 10403131421. The reversal of 10403131397 is 79313130401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10403131397 - 2² = 10403131393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403131393) 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, 1027223 + ... + 1037300.

It is an arithmetic number, because the mean of its divisors is an integer number (2601300240).

Almost surely, 2^10403131397 is an apocalyptic number.

It is an amenable number.

10403131397 is a deficient number, since it is larger than the sum of its proper divisors (2069563).

10403131397 is an equidigital number, since it uses as much as digits as its factorization.

10403131397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069562.

The product of its (nonzero) digits is 6804, while the sum is 32.

Adding to 10403131397 its reverse (79313130401), we get a palindrome (89716261798).

The spelling of 10403131397 in words is "ten billion, four hundred three million, one hundred thirty-one thousand, three hundred ninety-seven".