118603531 has 2 divisors, whose sum is σ = 118603532. Its totient is φ = 118603530.

The previous prime is 118603519. The next prime is 118603561. The reversal of 118603531 is 135306811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118603531 - 2¹³ = 118595339 is a prime.

It is a super-2 number, since 2×118603531² = 28133595131335922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118603531.

It is not a weakly prime, because it can be changed into another prime (118603561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59301765 + 59301766.

It is an arithmetic number, because the mean of its divisors is an integer number (59301766).

Almost surely, 2^118603531 is an apocalyptic number.

118603531 is a deficient number, since it is larger than the sum of its proper divisors (1).

118603531 is an equidigital number, since it uses as much as digits as its factorization.

118603531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 118603531 is about 10890.5248266555. The cubic root of 118603531 is about 491.3216174962.

The spelling of 118603531 in words is "one hundred eighteen million, six hundred three thousand, five hundred thirty-one".