31325601 has 4 divisors (see below), whose sum is σ = 41767472. Its totient is φ = 20883732.

The previous prime is 31325557. The next prime is 31325603. The reversal of 31325601 is 10652313.

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 not a de Polignac number, because 31325601 - 2¹⁴ = 31309217 is a prime.

It is a super-2 number, since 2×31325601² = 1962586556022402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31325603) 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, 5220931 + ... + 5220936.

It is an arithmetic number, because the mean of its divisors is an integer number (10441868).

Almost surely, 2^31325601 is an apocalyptic number.

It is an amenable number.

31325601 is a deficient number, since it is larger than the sum of its proper divisors (10441871).

31325601 is a wasteful number, since it uses less digits than its factorization.

31325601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441870.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 31325601 is about 5596.9278180087. The cubic root of 31325601 is about 315.2340613609.

Adding to 31325601 its reverse (10652313), we get a palindrome (41977914).

The spelling of 31325601 in words is "thirty-one million, three hundred twenty-five thousand, six hundred one".