31010142021 has 8 divisors (see below), whose sum is σ = 41408295360. Its totient is φ = 20642708352.

The previous prime is 31010142011. The next prime is 31010142049. The reversal of 31010142021 is 12024101013.

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

It is not a de Polignac number, because 31010142021 - 2²³ = 31001753413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010142011) 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, 7677561 + ... + 7681598.

It is an arithmetic number, because the mean of its divisors is an integer number (5176036920).

Almost surely, 2^31010142021 is an apocalyptic number.

It is an amenable number.

31010142021 is a deficient number, since it is larger than the sum of its proper divisors (10398153339).

31010142021 is a wasteful number, since it uses less digits than its factorization.

31010142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359835.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31010142021 its reverse (12024101013), we get a palindrome (43034243034).

The spelling of 31010142021 in words is "thirty-one billion, ten million, one hundred forty-two thousand, twenty-one".