1231455105210 has 256 divisors, whose sum is σ = 3455573114880. Its totient is φ = 277696512000.

The previous prime is 1231455105187. The next prime is 1231455105247. The reversal of 1231455105210 is 125015541321.

It is a super-2 number, since 2×1231455105210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 245160759 + ... + 245165781.

It is an arithmetic number, because the mean of its divisors is an integer number (13498332480).

Almost surely, 2^{1231455105210} is an apocalyptic number.

1231455105210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231455105210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727786557440).

1231455105210 is an abundant number, since it is smaller than the sum of its proper divisors (2224118009670).

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

1231455105210 is a wasteful number, since it uses less digits than its factorization.

1231455105210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1231455105210 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-five million, one hundred five thousand, two hundred ten".