31143040415 has 8 divisors (see below), whose sum is σ = 38381693280. Its totient is φ = 24241069152.

The previous prime is 31143040387. The next prime is 31143040427. The reversal of 31143040415 is 51404034113.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143040415 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84170195 + ... + 84170564.

It is an arithmetic number, because the mean of its divisors is an integer number (4797711660).

Almost surely, 2^31143040415 is an apocalyptic number.

31143040415 is a deficient number, since it is larger than the sum of its proper divisors (7238652865).

31143040415 is a wasteful number, since it uses less digits than its factorization.

31143040415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168340801.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31143040415 its reverse (51404034113), we get a palindrome (82547074528).

The spelling of 31143040415 in words is "thirty-one billion, one hundred forty-three million, forty thousand, four hundred fifteen".