113145731990 has 16 divisors (see below), whose sum is σ = 203667156000. Its totient is φ = 45257217600.

The previous prime is 113145731969. The next prime is 113145732017. The reversal of 113145731990 is 99137541311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414215 + ... + 630765.

It is an arithmetic number, because the mean of its divisors is an integer number (12729197250).

Almost surely, 2^113145731990 is an apocalyptic number.

113145731990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

113145731990 is a deficient number, since it is larger than the sum of its proper divisors (90521424010).

113145731990 is a wasteful number, since it uses less digits than its factorization.

113145731990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268807.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 113145731990 in words is "one hundred thirteen billion, one hundred forty-five million, seven hundred thirty-one thousand, nine hundred ninety".