31725541 has 8 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 31278912.

The previous prime is 31725521. The next prime is 31725557. The reversal of 31725541 is 14552713.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31725541 - 2¹¹ = 31723493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31725511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24570 + ... + 25828.

It is an arithmetic number, because the mean of its divisors is an integer number (4021920).

Almost surely, 2^31725541 is an apocalyptic number.

It is an amenable number.

31725541 is a deficient number, since it is larger than the sum of its proper divisors (449819).

31725541 is a wasteful number, since it uses less digits than its factorization.

31725541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its digits is 4200, while the sum is 28.

The square root of 31725541 is about 5632.5430313492. The cubic root of 31725541 is about 316.5699436208.

The spelling of 31725541 in words is "thirty-one million, seven hundred twenty-five thousand, five hundred forty-one".