31804077 has 4 divisors (see below), whose sum is σ = 42405440. Its totient is φ = 21202716.

The previous prime is 31804063. The next prime is 31804103. The reversal of 31804077 is 77040813.

It is a happy number.

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: 77040813 = 3 ⋅25680271.

It is not a de Polignac number, because 31804077 - 2¹⁸ = 31541933 is a prime.

It is a super-2 number, since 2×31804077² = 2022998627643858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31804027) 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, 5300677 + ... + 5300682.

It is an arithmetic number, because the mean of its divisors is an integer number (10601360).

Almost surely, 2^31804077 is an apocalyptic number.

It is an amenable number.

31804077 is a deficient number, since it is larger than the sum of its proper divisors (10601363).

31804077 is a wasteful number, since it uses less digits than its factorization.

31804077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601362.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 31804077 is about 5639.5103510855. The cubic root of 31804077 is about 316.8309494142.

The spelling of 31804077 in words is "thirty-one million, eight hundred four thousand, seventy-seven".