2151123031013 has 8 divisors (see below), whose sum is σ = 2378825967936. Its totient is φ = 1928777810400.

The previous prime is 2151123031007. The next prime is 2151123031019. The reversal of 2151123031013 is 3101303211512.

It is an interprime number because it is at equal distance from previous prime (2151123031007) and next prime (2151123031019).

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 2151123031013 - 2¹² = 2151123026917 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151123031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151123031019) 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, 1339428233 + ... + 1339429838.

It is an arithmetic number, because the mean of its divisors is an integer number (297353245992).

Almost surely, 2^{2151123031013} is an apocalyptic number.

It is an amenable number.

2151123031013 is a deficient number, since it is larger than the sum of its proper divisors (227702936923).

2151123031013 is a wasteful number, since it uses less digits than its factorization.

2151123031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678858155.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 2151123031013 its reverse (3101303211512), we get a palindrome (5252426242525).

The spelling of 2151123031013 in words is "two trillion, one hundred fifty-one billion, one hundred twenty-three million, thirty-one thousand, thirteen".