31427677 has 4 divisors (see below), whose sum is σ = 32511420. Its totient is φ = 30343936.

The previous prime is 31427659. The next prime is 31427687. The reversal of 31427677 is 77672413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 14830201 = 4074^2 + 3851^2 .

It is a cyclic number.

It is not a de Polignac number, because 31427677 - 2¹¹ = 31425629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31427647) 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, 541828 + ... + 541885.

It is an arithmetic number, because the mean of its divisors is an integer number (8127855).

Almost surely, 2^31427677 is an apocalyptic number.

It is an amenable number.

31427677 is a deficient number, since it is larger than the sum of its proper divisors (1083743).

31427677 is a wasteful number, since it uses less digits than its factorization.

31427677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083742.

The product of its digits is 49392, while the sum is 37.

The square root of 31427677 is about 5606.0393327197. The cubic root of 31427677 is about 315.5760919807.

The spelling of 31427677 in words is "thirty-one million, four hundred twenty-seven thousand, six hundred seventy-seven".