31323026242 has 16 divisors (see below), whose sum is σ = 47048261400. Its totient is φ = 15640289280.

The previous prime is 31323026233. The next prime is 31323026243. The reversal of 31323026242 is 24262032313.

It can be written as a sum of positive squares in 4 ways, for example, as 18664751161 + 12658275081 = 136619^2 + 112509^2 .

It is a super-2 number, since 2×31323026242² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31323026242.

It is not an unprimeable number, because it can be changed into a prime (31323026243) 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, 7102134 + ... + 7106542.

Almost surely, 2^31323026242 is an apocalyptic number.

31323026242 is a deficient number, since it is larger than the sum of its proper divisors (15725235158).

31323026242 is a wasteful number, since it uses less digits than its factorization.

31323026242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31323026242 its reverse (24262032313), we get a palindrome (55585058555).

The spelling of 31323026242 in words is "thirty-one billion, three hundred twenty-three million, twenty-six thousand, two hundred forty-two".