31020141 has 16 divisors (see below), whose sum is σ = 44467200. Its totient is φ = 19173168.

The previous prime is 31020137. The next prime is 31020191. The reversal of 31020141 is 14102013.

It is a happy number.

It is not a de Polignac number, because 31020141 - 2² = 31020137 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111 + ... + 8468.

It is an arithmetic number, because the mean of its divisors is an integer number (2779200).

Almost surely, 2^31020141 is an apocalyptic number.

It is an amenable number.

31020141 is a deficient number, since it is larger than the sum of its proper divisors (13447059).

31020141 is a wasteful number, since it uses less digits than its factorization.

31020141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11648.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 31020141 is about 5569.5727843345. The cubic root of 31020141 is about 314.2060833576.

Adding to 31020141 its reverse (14102013), we get a palindrome (45122154).

The spelling of 31020141 in words is "thirty-one million, twenty thousand, one hundred forty-one".