1131321303031 has 4 divisors (see below), whose sum is σ = 1197869614992. Its totient is φ = 1064772991072.

The previous prime is 1131321303029. The next prime is 1131321303037. The reversal of 1131321303031 is 1303031231311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131321303031 - 2¹ = 1131321303029 is a prime.

It is a super-2 number, since 2×1131321303031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131321302993 and 1131321303011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131321303037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33274155955 + ... + 33274155988.

It is an arithmetic number, because the mean of its divisors is an integer number (299467403748).

Almost surely, 2^{1131321303031} is an apocalyptic number.

1131321303031 is a deficient number, since it is larger than the sum of its proper divisors (66548311961).

1131321303031 is an equidigital number, since it uses as much as digits as its factorization.

1131321303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66548311960.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1131321303031 its reverse (1303031231311), we get a palindrome (2434352534342).

The spelling of 1131321303031 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, three hundred three thousand, thirty-one".