1231435425051 has 48 divisors (see below), whose sum is σ = 2001240783360. Its totient is φ = 724430649600.

The previous prime is 1231435424971. The next prime is 1231435425053. The reversal of 1231435425051 is 1505245341321.

1231435425051 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 4 + 354 + 250 + 51 = 666.

It is not a de Polignac number, because 1231435425051 - 2¹⁰ = 1231435424027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231435424997 and 1231435425015.

It is not an unprimeable number, because it can be changed into a prime (1231435425053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1454011 + ... + 2139396.

It is an arithmetic number, because the mean of its divisors is an integer number (41692516320).

Almost surely, 2^{1231435425051} is an apocalyptic number.

1231435425051 is a deficient number, since it is larger than the sum of its proper divisors (769805358309).

1231435425051 is a wasteful number, since it uses less digits than its factorization.

1231435425051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593556 (or 3593553 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 1231435425051 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-five million, four hundred twenty-five thousand, fifty-one".