31012233321121 has 8 divisors (see below), whose sum is σ = 34027936707240. Its totient is φ = 28086550931712.

The previous prime is 31012233321107. The next prime is 31012233321127. The reversal of 31012233321121 is 12112333221013.

It can be written as a sum of positive squares in 4 ways, for example, as 11904494183521 + 19107739137600 = 3450289^2 + 4371240^2 .

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

It is not a de Polignac number, because 31012233321121 - 2⁵ = 31012233321089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012233321127) 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, 22505248456 + ... + 22505249833.

It is an arithmetic number, because the mean of its divisors is an integer number (4253492088405).

Almost surely, 2^{31012233321121} is an apocalyptic number.

It is an amenable number.

31012233321121 is a deficient number, since it is larger than the sum of its proper divisors (3015703386119).

31012233321121 is a wasteful number, since it uses less digits than its factorization.

31012233321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45010498355.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31012233321121 its reverse (12112333221013), we get a palindrome (43124566542134).

The spelling of 31012233321121 in words is "thirty-one trillion, twelve billion, two hundred thirty-three million, three hundred twenty-one thousand, one hundred twenty-one".