3117520642 has 16 divisors (see below), whose sum is σ = 4844212992. Its totient is φ = 1503138960.

The previous prime is 3117520633. The next prime is 3117520643. The reversal of 3117520642 is 2460257113.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (3117520643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71293 + ... + 106384.

It is an arithmetic number, because the mean of its divisors is an integer number (302763312).

Almost surely, 2^3117520642 is an apocalyptic number.

3117520642 is a deficient number, since it is larger than the sum of its proper divisors (1726692350).

3117520642 is a wasteful number, since it uses less digits than its factorization.

3117520642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177993.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3117520642 is about 55834.7619498821. The cubic root of 3117520642 is about 1460.8415493002.

Adding to 3117520642 its reverse (2460257113), we get a palindrome (5577777755).

The spelling of 3117520642 in words is "three billion, one hundred seventeen million, five hundred twenty thousand, six hundred forty-two".