31341881 has 4 divisors (see below), whose sum is σ = 31581264. Its totient is φ = 31102500.

The previous prime is 31341857. The next prime is 31341911. The reversal of 31341881 is 18814313.

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.

It is a cyclic number.

It is not a de Polignac number, because 31341881 - 2¹⁰ = 31340857 is a prime.

It is a super-2 number, since 2×31341881² = 1964627009236322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31341841) 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, 119495 + ... + 119756.

It is an arithmetic number, because the mean of its divisors is an integer number (7895316).

Almost surely, 2^31341881 is an apocalyptic number.

It is an amenable number.

31341881 is a deficient number, since it is larger than the sum of its proper divisors (239383).

31341881 is a wasteful number, since it uses less digits than its factorization.

31341881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239382.

The product of its digits is 2304, while the sum is 29.

The square root of 31341881 is about 5598.3819983992. The cubic root of 31341881 is about 315.2886612363.

The spelling of 31341881 in words is "thirty-one million, three hundred forty-one thousand, eight hundred eighty-one".