101131232240 has 20 divisors (see below), whose sum is σ = 235130115144. Its totient is φ = 40452492864.

The previous prime is 101131232207. The next prime is 101131232269. The reversal of 101131232240 is 42232131101.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×101131232240² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 in 3 ways as a sum of consecutive naturals, for example, 632070122 + ... + 632070281.

Almost surely, 2^101131232240 is an apocalyptic number.

101131232240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101131232240 is an abundant number, since it is smaller than the sum of its proper divisors (133998882904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101131232240 is a wasteful number, since it uses less digits than its factorization.

101131232240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264140416 (or 1264140410 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 101131232240 its reverse (42232131101), we get a palindrome (143363363341).

The spelling of 101131232240 in words is "one hundred one billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred forty".