120101531 has 4 divisors (see below), whose sum is σ = 131019864. Its totient is φ = 109183200.

The previous prime is 120101507. The next prime is 120101539. The reversal of 120101531 is 135101021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120101531 - 2²² = 115907227 is a prime.

It is a super-2 number, since 2×120101531² = 28848755497087922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120101539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5459150 + ... + 5459171.

It is an arithmetic number, because the mean of its divisors is an integer number (32754966).

Almost surely, 2^120101531 is an apocalyptic number.

120101531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120101531 is a deficient number, since it is larger than the sum of its proper divisors (10918333).

120101531 is a wasteful number, since it uses less digits than its factorization.

120101531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10918332.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 120101531 is about 10959.0844051864. The cubic root of 120101531 is about 493.3814850837.

Adding to 120101531 its reverse (135101021), we get a palindrome (255202552).

The spelling of 120101531 in words is "one hundred twenty million, one hundred one thousand, five hundred thirty-one".