1231053105151 has 4 divisors (see below), whose sum is σ = 1237854503704. Its totient is φ = 1224251706600.

The previous prime is 1231053105133. The next prime is 1231053105157. The reversal of 1231053105151 is 1515013501321.

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 1231053105151 - 2²¹ = 1231051007999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231053105157) 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, 3400699005 + ... + 3400699366.

It is an arithmetic number, because the mean of its divisors is an integer number (309463625926).

Almost surely, 2^{1231053105151} is an apocalyptic number.

1231053105151 is a deficient number, since it is larger than the sum of its proper divisors (6801398553).

1231053105151 is an equidigital number, since it uses as much as digits as its factorization.

1231053105151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801398552.

The product of its (nonzero) digits is 2250, while the sum is 28.

Adding to 1231053105151 its reverse (1515013501321), we get a palindrome (2746066606472).

The spelling of 1231053105151 in words is "one trillion, two hundred thirty-one billion, fifty-three million, one hundred five thousand, one hundred fifty-one".