11398031 has 2 divisors, whose sum is σ = 11398032. Its totient is φ = 11398030.

The previous prime is 11398027. The next prime is 11398039. The reversal of 11398031 is 13089311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11398031 - 2² = 11398027 is a prime.

It is a super-2 number, since 2×11398031² = 259830221353922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11398039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5699015 + 5699016.

It is an arithmetic number, because the mean of its divisors is an integer number (5699016).

Almost surely, 2^11398031 is an apocalyptic number.

11398031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11398031 is an equidigital number, since it uses as much as digits as its factorization.

11398031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 11398031 is about 3376.0970069001. The cubic root of 11398031 is about 225.0487532213.

The spelling of 11398031 in words is "eleven million, three hundred ninety-eight thousand, thirty-one".