1531416340 has 48 divisors (see below), whose sum is σ = 3501993600. Its totient is φ = 560310912.

The previous prime is 1531416323. The next prime is 1531416349. The reversal of 1531416340 is 436141351.

It is a junction number, because it is equal to n+sod(n) for n = 1531416299 and 1531416308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531416349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58464 + ... + 80503.

It is an arithmetic number, because the mean of its divisors is an integer number (72958200).

Almost surely, 2^1531416340 is an apocalyptic number.

1531416340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531416340 is an abundant number, since it is smaller than the sum of its proper divisors (1970577260).

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

1531416340 is a wasteful number, since it uses less digits than its factorization.

1531416340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139024 (or 139022 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1531416340 is about 39133.3149630848. The cubic root of 1531416340 is about 1152.6508075564.

Adding to 1531416340 its reverse (436141351), we get a palindrome (1967557691).

The spelling of 1531416340 in words is "one billion, five hundred thirty-one million, four hundred sixteen thousand, three hundred forty".