1231011233130 has 64 divisors (see below), whose sum is σ = 3376616802048. Its totient is φ = 281363258880.

The previous prime is 1231011233107. The next prime is 1231011233141. The reversal of 1231011233130 is 313321101321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1231011233097 and 1231011233106.

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, 6269040 + ... + 6462420.

It is an arithmetic number, because the mean of its divisors is an integer number (52759637532).

Almost surely, 2^{1231011233130} is an apocalyptic number.

1231011233130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231011233130 is an abundant number, since it is smaller than the sum of its proper divisors (2145605568918).

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

1231011233130 is a wasteful number, since it uses less digits than its factorization.

1231011233130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223711.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1231011233130 its reverse (313321101321), we get a palindrome (1544332334451).

The spelling of 1231011233130 in words is "one trillion, two hundred thirty-one billion, eleven million, two hundred thirty-three thousand, one hundred thirty".