1210231020 has 192 divisors, whose sum is σ = 3797176320. Its totient is φ = 286420992.

The previous prime is 1210231019. The next prime is 1210231021. The reversal of 1210231020 is 201320121.

It is an interprime number because it is at equal distance from previous prime (1210231019) and next prime (1210231021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1210230987 and 1210231005.

It is not an unprimeable number, because it can be changed into a prime (1210231021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1853014 + ... + 1853666.

It is an arithmetic number, because the mean of its divisors is an integer number (19776960).

Almost surely, 2^1210231020 is an apocalyptic number.

1210231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210231020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898588160).

1210231020 is an abundant number, since it is smaller than the sum of its proper divisors (2586945300).

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

1210231020 is a wasteful number, since it uses less digits than its factorization.

1210231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1210231020 is about 34788.3747823896. The cubic root of 1210231020 is about 1065.6700493736.

Adding to 1210231020 its reverse (201320121), we get a palindrome (1411551141).

The spelling of 1210231020 in words is "one billion, two hundred ten million, two hundred thirty-one thousand, twenty".