1284429231 has 48 divisors (see below), whose sum is σ = 1999915008. Its totient is φ = 822895200.

The previous prime is 1284429229. The next prime is 1284429239. The reversal of 1284429231 is 1329244821.

1284429231 is a `hidden beast` number, since 128 + 442 + 92 + 3 + 1 = 666.

It is not a de Polignac number, because 1284429231 - 2¹ = 1284429229 is a prime.

It is a super-2 number, since 2×1284429231² = 3299516898894502722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284429239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1257501 + ... + 1258521.

It is an arithmetic number, because the mean of its divisors is an integer number (41664896).

Almost surely, 2^1284429231 is an apocalyptic number.

1284429231 is a deficient number, since it is larger than the sum of its proper divisors (715485777).

1284429231 is a wasteful number, since it uses less digits than its factorization.

1284429231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1222 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1284429231 is about 35838.9345684271. The cubic root of 1284429231 is about 1087.0179780574.

The spelling of 1284429231 in words is "one billion, two hundred eighty-four million, four hundred twenty-nine thousand, two hundred thirty-one".