1031331120231 has 8 divisors (see below), whose sum is σ = 1375113953664. Its totient is φ = 687551183480.

The previous prime is 1031331120221. The next prime is 1031331120241. The reversal of 1031331120231 is 1320211331301.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1031331120221) and next prime (1031331120241).

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 1031331120231 - 2⁵ = 1031331120199 is a prime.

It is a super-2 number, since 2×1031331120231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031331120198 and 1031331120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031331120221) 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, 322846 + ... + 1472036.

It is an arithmetic number, because the mean of its divisors is an integer number (171889244208).

Almost surely, 2^{1031331120231} is an apocalyptic number.

1031331120231 is a deficient number, since it is larger than the sum of its proper divisors (343782833433).

1031331120231 is a wasteful number, since it uses less digits than its factorization.

1031331120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448341.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1031331120231 its reverse (1320211331301), we get a palindrome (2351542451532).

The spelling of 1031331120231 in words is "one trillion, thirty-one billion, three hundred thirty-one million, one hundred twenty thousand, two hundred thirty-one".