11397283731 has 12 divisors (see below), whose sum is σ = 16487962608. Its totient is φ = 7586549424.

The previous prime is 11397283727. The next prime is 11397283747. The reversal of 11397283731 is 13738279311.

It is not a de Polignac number, because 11397283731 - 2² = 11397283727 is a prime.

It is a super-2 number, since 2×11397283731² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11397383731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963775 + ... + 975528.

It is an arithmetic number, because the mean of its divisors is an integer number (1373996884).

Almost surely, 2^11397283731 is an apocalyptic number.

11397283731 is a deficient number, since it is larger than the sum of its proper divisors (5090678877).

11397283731 is a wasteful number, since it uses less digits than its factorization.

11397283731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939962 (or 1939959 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The spelling of 11397283731 in words is "eleven billion, three hundred ninety-seven million, two hundred eighty-three thousand, seven hundred thirty-one".