31542040130 has 8 divisors (see below), whose sum is σ = 56775672252. Its totient is φ = 12616816048.

The previous prime is 31542040129. The next prime is 31542040141. The reversal of 31542040130 is 3104024513.

It can be written as a sum of positive squares in 2 ways, for example, as 31021424641 + 520615489 = 176129^2 + 22817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31542040096 and 31542040105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577101997 + ... + 1577102016.

Almost surely, 2^31542040130 is an apocalyptic number.

31542040130 is a deficient number, since it is larger than the sum of its proper divisors (25233632122).

31542040130 is a wasteful number, since it uses less digits than its factorization.

31542040130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154204020.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 31542040130 its reverse (3104024513), we get a palindrome (34646064643).

The spelling of 31542040130 in words is "thirty-one billion, five hundred forty-two million, forty thousand, one hundred thirty".