31032234021 has 8 divisors (see below), whose sum is σ = 41405272480. Its totient is φ = 20673675792.

The previous prime is 31032234011. The next prime is 31032234151. The reversal of 31032234021 is 12043223013.

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

It is not a de Polignac number, because 31032234021 - 2¹⁸ = 31031971877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032234011) 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, 3615055 + ... + 3623628.

It is an arithmetic number, because the mean of its divisors is an integer number (5175659060).

Almost surely, 2^31032234021 is an apocalyptic number.

It is an amenable number.

31032234021 is a deficient number, since it is larger than the sum of its proper divisors (10373038459).

31032234021 is a wasteful number, since it uses less digits than its factorization.

31032234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240115.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31032234021 its reverse (12043223013), we get a palindrome (43075457034).

The spelling of 31032234021 in words is "thirty-one billion, thirty-two million, two hundred thirty-four thousand, twenty-one".