101131530 has 32 divisors (see below), whose sum is σ = 243000000. Its totient is φ = 26936832.

The previous prime is 101131519. The next prime is 101131531. The reversal of 101131530 is 35131101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (101131531) 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, 36121 + ... + 38819.

It is an arithmetic number, because the mean of its divisors is an integer number (7593750).

Almost surely, 2^101131530 is an apocalyptic number.

101131530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101131530 is an abundant number, since it is smaller than the sum of its proper divisors (141868470).

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

101131530 is a wasteful number, since it uses less digits than its factorization.

101131530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 101131530 is about 10056.4173541078. The cubic root of 101131530 is about 465.9030203366.

Adding to 101131530 its reverse (35131101), we get a palindrome (136262631).

The spelling of 101131530 in words is "one hundred one million, one hundred thirty-one thousand, five hundred thirty".