31250053 has 4 divisors (see below), whose sum is σ = 31284000. Its totient is φ = 31216108.

The previous prime is 31250047. The next prime is 31250057. The reversal of 31250053 is 35005213.

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 a de Polignac number, because none of the positive numbers 2^k-31250053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31250053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31250057) 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, 15553 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (7821000).

Almost surely, 2^31250053 is an apocalyptic number.

It is an amenable number.

31250053 is a deficient number, since it is larger than the sum of its proper divisors (33947).

31250053 is an equidigital number, since it uses as much as digits as its factorization.

31250053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33946.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 31250053 is about 5590.1746842116. The cubic root of 31250053 is about 314.9804405425.

Adding to 31250053 its reverse (35005213), we get a palindrome (66255266).

The spelling of 31250053 in words is "thirty-one million, two hundred fifty thousand, fifty-three".