31342020121 has 8 divisors (see below), whose sum is σ = 33004762560. Its totient is φ = 29704281552.

The previous prime is 31342020107. The next prime is 31342020137. The reversal of 31342020121 is 12102024313.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31342020121 - 2⁹ = 31342019609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31342020161) 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, 6248395 + ... + 6253408.

It is an arithmetic number, because the mean of its divisors is an integer number (4125595320).

Almost surely, 2^31342020121 is an apocalyptic number.

It is an amenable number.

31342020121 is a deficient number, since it is larger than the sum of its proper divisors (1662742439).

31342020121 is a wasteful number, since it uses less digits than its factorization.

31342020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501935.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31342020121 its reverse (12102024313), we get a palindrome (43444044434).

The spelling of 31342020121 in words is "thirty-one billion, three hundred forty-two million, twenty thousand, one hundred twenty-one".