1331020042430 has 32 divisors (see below), whose sum is σ = 2580446471904. Its totient is φ = 491393494656.

The previous prime is 1331020042427. The next prime is 1331020042433. The reversal of 1331020042430 is 342400201331.

It is an interprime number because it is at equal distance from previous prime (1331020042427) and next prime (1331020042433).

It is a super-2 number, since 2×1331020042430² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1331020042396 and 1331020042405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331020042433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449309 + ... + 1692311.

It is an arithmetic number, because the mean of its divisors is an integer number (80638952247).

Almost surely, 2^{1331020042430} is an apocalyptic number.

1331020042430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331020042430 is a deficient number, since it is larger than the sum of its proper divisors (1249426429474).

1331020042430 is a wasteful number, since it uses less digits than its factorization.

1331020042430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251260.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1331020042430 its reverse (342400201331), we get a palindrome (1673420243761).

The spelling of 1331020042430 in words is "one trillion, three hundred thirty-one billion, twenty million, forty-two thousand, four hundred thirty".