31201625101 has 4 divisors (see below), whose sum is σ = 31203235900. Its totient is φ = 31200014304.

The previous prime is 31201625083. The next prime is 31201625107. The reversal of 31201625101 is 10152610213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17675702500 + 13525922601 = 132950^2 + 116301^2 .

It is a cyclic number.

It is not a de Polignac number, because 31201625101 - 2¹⁷ = 31201494029 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 (31201625107) 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, 775986 + ... + 815203.

It is an arithmetic number, because the mean of its divisors is an integer number (7800808975).

Almost surely, 2^31201625101 is an apocalyptic number.

It is an amenable number.

31201625101 is a deficient number, since it is larger than the sum of its proper divisors (1610799).

31201625101 is a wasteful number, since it uses less digits than its factorization.

31201625101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610798.

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 31201625101 in words is "thirty-one billion, two hundred one million, six hundred twenty-five thousand, one hundred one".