1331242330 has 32 divisors (see below), whose sum is σ = 2628557568. Its totient is φ = 481406400.

The previous prime is 1331242309. The next prime is 1331242357. The reversal of 1331242330 is 332421331.

It is a super-2 number, since 2×1331242330² = 3544412282367657800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 13522 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (82142424).

Almost surely, 2^1331242330 is an apocalyptic number.

1331242330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331242330 is a deficient number, since it is larger than the sum of its proper divisors (1297315238).

1331242330 is a wasteful number, since it uses less digits than its factorization.

1331242330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67062.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1331242330 is about 36486.1936902166. The cubic root of 1331242330 is about 1100.0667535247.

Adding to 1331242330 its reverse (332421331), we get a palindrome (1663663661).

The spelling of 1331242330 in words is "one billion, three hundred thirty-one million, two hundred forty-two thousand, three hundred thirty".