101531254505 has 16 divisors (see below), whose sum is σ = 123103943040. Its totient is φ = 80381783808.

The previous prime is 101531254493. The next prime is 101531254507. The reversal of 101531254505 is 505452135101.

It is a cyclic number.

It is not a de Polignac number, because 101531254505 - 2⁸ = 101531254249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101531254507) 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, 700634 + ... + 833036.

It is an arithmetic number, because the mean of its divisors is an integer number (7693996440).

Almost surely, 2^101531254505 is an apocalyptic number.

It is an amenable number.

101531254505 is a deficient number, since it is larger than the sum of its proper divisors (21572688535).

101531254505 is a wasteful number, since it uses less digits than its factorization.

101531254505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134000.

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 101531254505 its reverse (505452135101), we get a palindrome (606983389606).

The spelling of 101531254505 in words is "one hundred one billion, five hundred thirty-one million, two hundred fifty-four thousand, five hundred five".