1231001430 has 32 divisors (see below), whose sum is σ = 2968420608. Its totient is φ = 326709600.

The previous prime is 1231001407. The next prime is 1231001461. The reversal of 1231001430 is 341001321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90906 + ... + 103565.

It is an arithmetic number, because the mean of its divisors is an integer number (92763144).

Almost surely, 2^1231001430 is an apocalyptic number.

1231001430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231001430 is an abundant number, since it is smaller than the sum of its proper divisors (1737419178).

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

1231001430 is a wasteful number, since it uses less digits than its factorization.

1231001430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194692.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1231001430 is about 35085.6299644171. The cubic root of 1231001430 is about 1071.7319695195.

Adding to 1231001430 its reverse (341001321), we get a palindrome (1572002751).

The spelling of 1231001430 in words is "one billion, two hundred thirty-one million, one thousand, four hundred thirty".