31422143040 has 56 divisors (see below), whose sum is σ = 99765307200. Its totient is φ = 8379237888.

The previous prime is 31422142987. The next prime is 31422143041. The reversal of 31422143040 is 4034122413.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31422143040.

It is not an unprimeable number, because it can be changed into a prime (31422143041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16364740 + ... + 16366659.

Almost surely, 2^31422143040 is an apocalyptic number.

31422143040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31422143040 is an abundant number, since it is smaller than the sum of its proper divisors (68343164160).

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

31422143040 is a wasteful number, since it uses less digits than its factorization.

31422143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32731419 (or 32731409 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31422143040 its reverse (4034122413), we get a palindrome (35456265453).

The spelling of 31422143040 in words is "thirty-one billion, four hundred twenty-two million, one hundred forty-three thousand, forty".