101011231988 has 6 divisors (see below), whose sum is σ = 176769655986. Its totient is φ = 50505615992.

The previous prime is 101011231949. The next prime is 101011231991. The reversal of 101011231988 is 889132110101.

It can be written as a sum of positive squares in only one way, i.e., 65562626704 + 35448605284 = 256052^2 + 188278^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12626403995 + ... + 12626404002.

It is an arithmetic number, because the mean of its divisors is an integer number (29461609331).

Almost surely, 2^101011231988 is an apocalyptic number.

It is an amenable number.

101011231988 is a deficient number, since it is larger than the sum of its proper divisors (75758423998).

101011231988 is a wasteful number, since it uses less digits than its factorization.

101011231988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25252808001 (or 25252807999 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 35.

The spelling of 101011231988 in words is "one hundred one billion, eleven million, two hundred thirty-one thousand, nine hundred eighty-eight".