1231535051045 has 32 divisors (see below), whose sum is σ = 1613944518144. Its totient is φ = 896638118400.

The previous prime is 1231535051009. The next prime is 1231535051081. The reversal of 1231535051045 is 5401505351321.

It is an interprime number because it is at equal distance from previous prime (1231535051009) and next prime (1231535051081).

It is a de Polignac number, because none of the positive numbers 2^k-1231535051045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231535050996 and 1231535051014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12625310 + ... + 12722480.

It is an arithmetic number, because the mean of its divisors is an integer number (50435766192).

Almost surely, 2^{1231535051045} is an apocalyptic number.

It is an amenable number.

1231535051045 is a deficient number, since it is larger than the sum of its proper divisors (382409467099).

1231535051045 is a wasteful number, since it uses less digits than its factorization.

1231535051045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99933.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 1231535051045 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-five million, fifty-one thousand, forty-five".