101531312 has 20 divisors (see below), whose sum is σ = 196873560. Its totient is φ = 50725248.

The previous prime is 101531273. The next prime is 101531321. The reversal of 101531312 is 213135101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36068 + ... + 38780.

It is an arithmetic number, because the mean of its divisors is an integer number (9843678).

Almost surely, 2^101531312 is an apocalyptic number.

It is an amenable number.

101531312 is a deficient number, since it is larger than the sum of its proper divisors (95342248).

101531312 is a wasteful number, since it uses less digits than its factorization.

101531312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060 (or 5054 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 101531312 is about 10076.2747084426. The cubic root of 101531312 is about 466.5161319454.

Adding to 101531312 its reverse (213135101), we get a palindrome (314666413).

The spelling of 101531312 in words is "one hundred one million, five hundred thirty-one thousand, three hundred twelve".