131061252421 has 8 divisors (see below), whose sum is σ = 142993749600. Its totient is φ = 119131728240.

The previous prime is 131061252409. The next prime is 131061252437. The reversal of 131061252421 is 124252160131.

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

It is a cyclic number.

It is not a de Polignac number, because 131061252421 - 2¹¹ = 131061250373 is a prime.

It is a super-2 number, since 2×131061252421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131061252421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131061252451) 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, 650566 + ... + 827863.

It is an arithmetic number, because the mean of its divisors is an integer number (17874218700).

Almost surely, 2^131061252421 is an apocalyptic number.

131061252421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131061252421 is a deficient number, since it is larger than the sum of its proper divisors (11932497179).

131061252421 is a wasteful number, since it uses less digits than its factorization.

131061252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486499.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 131061252421 in words is "one hundred thirty-one billion, sixty-one million, two hundred fifty-two thousand, four hundred twenty-one".