131262461 has 4 divisors (see below), whose sum is σ = 143195424. Its totient is φ = 119329500.

The previous prime is 131262427. The next prime is 131262473. The reversal of 131262461 is 164262131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164262131 = 11 ⋅14932921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131262461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131262461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131262161) 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, 5966465 + ... + 5966486.

It is an arithmetic number, because the mean of its divisors is an integer number (35798856).

Almost surely, 2^131262461 is an apocalyptic number.

131262461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131262461 is a deficient number, since it is larger than the sum of its proper divisors (11932963).

131262461 is a wasteful number, since it uses less digits than its factorization.

131262461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11932962.

The product of its digits is 1728, while the sum is 26.

The square root of 131262461 is about 11456.9830671080. The cubic root of 131262461 is about 508.2142608382.

The spelling of 131262461 in words is "one hundred thirty-one million, two hundred sixty-two thousand, four hundred sixty-one".