31464861 has 4 divisors (see below), whose sum is σ = 41953152. Its totient is φ = 20976572.

The previous prime is 31464827. The next prime is 31464883. The reversal of 31464861 is 16846413.

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 31464861 - 2¹³ = 31456669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31464821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5244141 + ... + 5244146.

It is an arithmetic number, because the mean of its divisors is an integer number (10488288).

Almost surely, 2^31464861 is an apocalyptic number.

It is an amenable number.

31464861 is a deficient number, since it is larger than the sum of its proper divisors (10488291).

31464861 is a wasteful number, since it uses less digits than its factorization.

31464861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10488290.

The product of its digits is 13824, while the sum is 33.

The square root of 31464861 is about 5609.3547757296. The cubic root of 31464861 is about 315.7005020302.

The spelling of 31464861 in words is "thirty-one million, four hundred sixty-four thousand, eight hundred sixty-one".