31452961 has 4 divisors (see below), whose sum is σ = 33108400. Its totient is φ = 29797524.

The previous prime is 31452943. The next prime is 31452973. The reversal of 31452961 is 16925413.

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: 16925413 = 2687 ⋅6299.

It is a cyclic number.

It is not a de Polignac number, because 31452961 - 2¹⁷ = 31321889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31452901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827691 + ... + 827728.

It is an arithmetic number, because the mean of its divisors is an integer number (8277100).

Almost surely, 2^31452961 is an apocalyptic number.

It is an amenable number.

31452961 is a deficient number, since it is larger than the sum of its proper divisors (1655439).

31452961 is a wasteful number, since it uses less digits than its factorization.

31452961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655438.

The product of its digits is 6480, while the sum is 31.

The square root of 31452961 is about 5608.2939473605. The cubic root of 31452961 is about 315.6606977367.

The spelling of 31452961 in words is "thirty-one million, four hundred fifty-two thousand, nine hundred sixty-one".