10398731 has 20 divisors (see below), whose sum is σ = 12503664. Its totient is φ = 8643600.

The previous prime is 10398721. The next prime is 10398743. The reversal of 10398731 is 13789301.

10398731 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10398731 - 2⁶ = 10398667 is a prime.

It is a super-2 number, since 2×10398731² = 216267212820722, which contains 22 as substring.

It is a Duffinian number.

10398731 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (10398701) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146426 + ... + 146496.

Almost surely, 2^10398731 is an apocalyptic number.

10398731 is a deficient number, since it is larger than the sum of its proper divisors (2104933).

10398731 is an frugal number, since it uses more digits than its factorization.

10398731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 10398731 is about 3224.7063432195. The cubic root of 10398731 is about 218.2696981898.

The spelling of 10398731 in words is "ten million, three hundred ninety-eight thousand, seven hundred thirty-one".