31042133430 has 128 divisors (see below), whose sum is σ = 93066402816. Its totient is φ = 6437683200.

The previous prime is 31042133417. The next prime is 31042133431. The reversal of 31042133430 is 3433124013.

It is a super-2 number, since 2×31042133430² (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 31042133430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042133431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1190614 + ... + 1216406.

It is an arithmetic number, because the mean of its divisors is an integer number (727081272).

Almost surely, 2^31042133430 is an apocalyptic number.

31042133430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31042133430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46533201408).

31042133430 is an abundant number, since it is smaller than the sum of its proper divisors (62024269386).

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

31042133430 is a wasteful number, since it uses less digits than its factorization.

31042133430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26342.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31042133430 its reverse (3433124013), we get a palindrome (34475257443).

The spelling of 31042133430 in words is "thirty-one billion, forty-two million, one hundred thirty-three thousand, four hundred thirty".