31220123241 has 16 divisors (see below), whose sum is σ = 42036160320. Its totient is φ = 20609000640.

The previous prime is 31220123197. The next prime is 31220123243. The reversal of 31220123241 is 14232102213.

It is not a de Polignac number, because 31220123241 - 2⁶ = 31220123177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31220123243) 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, 483331 + ... + 544103.

It is an arithmetic number, because the mean of its divisors is an integer number (2627260020).

Almost surely, 2^31220123241 is an apocalyptic number.

It is an amenable number.

31220123241 is a deficient number, since it is larger than the sum of its proper divisors (10816037079).

31220123241 is a wasteful number, since it uses less digits than its factorization.

31220123241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62456.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31220123241 its reverse (14232102213), we get a palindrome (45452225454).

The spelling of 31220123241 in words is "thirty-one billion, two hundred twenty million, one hundred twenty-three thousand, two hundred forty-one".