1331400429 has 8 divisors (see below), whose sum is σ = 1972445120. Its totient is φ = 887600268.

The previous prime is 1331400419. The next prime is 1331400479. The reversal of 1331400429 is 9240041331.

It is not a de Polignac number, because 1331400429 - 2⁹ = 1331399917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49311127 = 1331400429 / (1 + 3 + 3 + 1 + 4 + 0 + 0 + 4 + 2 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331400419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24655537 + ... + 24655590.

It is an arithmetic number, because the mean of its divisors is an integer number (246555640).

Almost surely, 2^1331400429 is an apocalyptic number.

It is an amenable number.

1331400429 is a deficient number, since it is larger than the sum of its proper divisors (641044691).

1331400429 is an equidigital number, since it uses as much as digits as its factorization.

1331400429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49311136 (or 49311130 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1331400429 is about 36488.3601851330. The cubic root of 1331400429 is about 1100.1102999588.

The spelling of 1331400429 in words is "one billion, three hundred thirty-one million, four hundred thousand, four hundred twenty-nine".