131022477 has 12 divisors (see below), whose sum is σ = 191921184. Its totient is φ = 86117640.

The previous prime is 131022473. The next prime is 131022481. The reversal of 131022477 is 774220131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131022473) and next prime (131022481).

It is not a de Polignac number, because 131022477 - 2² = 131022473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131022477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131022473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101883 + ... + 103160.

It is an arithmetic number, because the mean of its divisors is an integer number (15993432).

Almost surely, 2^131022477 is an apocalyptic number.

It is an amenable number.

131022477 is a deficient number, since it is larger than the sum of its proper divisors (60898707).

131022477 is a wasteful number, since it uses less digits than its factorization.

131022477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205120 (or 205117 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 131022477 is about 11446.5050124481. The cubic root of 131022477 is about 507.9043532597.

The spelling of 131022477 in words is "one hundred thirty-one million, twenty-two thousand, four hundred seventy-seven".