1431491040 has 576 divisors, whose sum is σ = 5943974400. Its totient is φ = 306819072.

The previous prime is 1431490993. The next prime is 1431491057. The reversal of 1431491040 is 401941341.

It is a junction number, because it is equal to n+sod(n) for n = 1431490995 and 1431491013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17246839 + ... + 17246921.

It is an arithmetic number, because the mean of its divisors is an integer number (10319400).

Almost surely, 2^1431491040 is an apocalyptic number.

1431491040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431491040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2971987200).

1431491040 is an abundant number, since it is smaller than the sum of its proper divisors (4512483360).

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

1431491040 is a wasteful number, since it uses less digits than its factorization.

1431491040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1431491040 is about 37835.0504162476. The cubic root of 1431491040 is about 1127.0146064635.

The spelling of 1431491040 in words is "one billion, four hundred thirty-one million, four hundred ninety-one thousand, forty".