1231035120040 has 32 divisors (see below), whose sum is σ = 3021631659360. Its totient is φ = 447649134400.

The previous prime is 1231035120011. The next prime is 1231035120101. The reversal of 1231035120040 is 400215301321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1231035119993 and 1231035120020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398903106 + ... + 1398903985.

It is an arithmetic number, because the mean of its divisors is an integer number (94425989355).

Almost surely, 2^{1231035120040} is an apocalyptic number.

1231035120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231035120040 is an abundant number, since it is smaller than the sum of its proper divisors (1790596539320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231035120040 is a wasteful number, since it uses less digits than its factorization.

1231035120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797807113 (or 2797807109 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 1231035120040 in words is "one trillion, two hundred thirty-one billion, thirty-five million, one hundred twenty thousand, forty".