10131399 has 24 divisors (see below), whose sum is σ = 15327312. Its totient is φ = 6687360.

The previous prime is 10131361. The next prime is 10131403. The reversal of 10131399 is 99313101.

It is not a de Polignac number, because 10131399 - 2¹³ = 10123207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41919 + ... + 42159.

It is an arithmetic number, because the mean of its divisors is an integer number (638638).

Almost surely, 2^10131399 is an apocalyptic number.

10131399 is a deficient number, since it is larger than the sum of its proper divisors (5195913).

10131399 is an equidigital number, since it uses as much as digits as its factorization.

10131399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 10131399 is about 3182.9858623626. The cubic root of 10131399 is about 216.3830010348.

The spelling of 10131399 in words is "ten million, one hundred thirty-one thousand, three hundred ninety-nine".