115645031 has 4 divisors (see below), whose sum is σ = 115684464. Its totient is φ = 115605600.

The previous prime is 115644941. The next prime is 115645043. The reversal of 115645031 is 130546511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130546511 = 19 ⋅6870869.

It is a cyclic number.

It is not a de Polignac number, because 115645031 - 2¹⁰ = 115644007 is a prime.

It is a super-2 number, since 2×115645031² = 26747546389981922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115644031) 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, 14930 + ... + 21311.

It is an arithmetic number, because the mean of its divisors is an integer number (28921116).

Almost surely, 2^115645031 is an apocalyptic number.

115645031 is a deficient number, since it is larger than the sum of its proper divisors (39433).

115645031 is an equidigital number, since it uses as much as digits as its factorization.

115645031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39432.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 115645031 is about 10753.8379660473. The cubic root of 115645031 is about 487.2019213073.

The spelling of 115645031 in words is "one hundred fifteen million, six hundred forty-five thousand, thirty-one".