1213146234 has 80 divisors (see below), whose sum is σ = 2798851968. Its totient is φ = 392551488.

The previous prime is 1213146211. The next prime is 1213146239. The reversal of 1213146234 is 4326413121.

It is a happy number.

1213146234 is a `hidden beast` number, since 1 + 2 + 1 + 31 + 4 + 623 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1213146198 and 1213146207.

It is not an unprimeable number, because it can be changed into a prime (1213146239) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1042537 + ... + 1043699.

Almost surely, 2^1213146234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213146234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399425984).

1213146234 is an abundant number, since it is smaller than the sum of its proper divisors (1585705734).

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

1213146234 is a wasteful number, since it uses less digits than its factorization.

1213146234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1352 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1213146234 is about 34830.2488363204. The cubic root of 1213146234 is about 1066.5250280465.

Adding to 1213146234 its reverse (4326413121), we get a palindrome (5539559355).

The spelling of 1213146234 in words is "one billion, two hundred thirteen million, one hundred forty-six thousand, two hundred thirty-four".