1231013450 has 24 divisors (see below), whose sum is σ = 2304283692. Its totient is φ = 489265920.

The previous prime is 1231013449. The next prime is 1231013473. The reversal of 1231013450 is 543101321.

It can be written as a sum of positive squares in 6 ways, for example, as 787531969 + 443481481 = 28063^2 + 21059^2 .

It is a super-2 number, since 2×1231013450² = 3030788228161805000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70559 + ... + 86258.

Almost surely, 2^1231013450 is an apocalyptic number.

1231013450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231013450 is a deficient number, since it is larger than the sum of its proper divisors (1073270242).

1231013450 is a wasteful number, since it uses less digits than its factorization.

1231013450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156986 (or 156981 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1231013450 is about 35085.8012591989. The cubic root of 1231013450 is about 1071.7354577841.

Adding to 1231013450 its reverse (543101321), we get a palindrome (1774114771).

The spelling of 1231013450 in words is "one billion, two hundred thirty-one million, thirteen thousand, four hundred fifty".