12531231501 has 8 divisors (see below), whose sum is σ = 16781914464. Its totient is φ = 8317351440.

The previous prime is 12531231497. The next prime is 12531231511. The reversal of 12531231501 is 10513213521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12531231501 - 2² = 12531231497 is a prime.

It is a super-3 number, since 3×12531231501³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531231511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9199930 + ... + 9201291.

It is an arithmetic number, because the mean of its divisors is an integer number (2097739308).

Almost surely, 2^12531231501 is an apocalyptic number.

It is an amenable number.

12531231501 is a deficient number, since it is larger than the sum of its proper divisors (4250682963).

12531231501 is a wasteful number, since it uses less digits than its factorization.

12531231501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18401451.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 12531231501 in words is "twelve billion, five hundred thirty-one million, two hundred thirty-one thousand, five hundred one".