101331540 has 48 divisors (see below), whose sum is σ = 315255360. Its totient is φ = 27021600.

The previous prime is 101331511. The next prime is 101331547. The reversal of 101331540 is 45133101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101331547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93286 + ... + 94365.

It is an arithmetic number, because the mean of its divisors is an integer number (6567820).

Almost surely, 2^101331540 is an apocalyptic number.

101331540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101331540 is an abundant number, since it is smaller than the sum of its proper divisors (213923820).

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

101331540 is a wasteful number, since it uses less digits than its factorization.

101331540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187669 (or 187661 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 101331540 is about 10066.3568384992. The cubic root of 101331540 is about 466.2099602165.

Adding to 101331540 its reverse (45133101), we get a palindrome (146464641).

The spelling of 101331540 in words is "one hundred one million, three hundred thirty-one thousand, five hundred forty".