31553101420 has 48 divisors (see below), whose sum is σ = 68591023200. Its totient is φ = 12178091520.

The previous prime is 31553101417. The next prime is 31553101421. The reversal of 31553101420 is 2410135513.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31553101421) 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 15 ways as a sum of consecutive naturals, for example, 916315 + ... + 950125.

It is an arithmetic number, because the mean of its divisors is an integer number (1428979650).

Almost surely, 2^31553101420 is an apocalyptic number.

It is an amenable number.

31553101420 is an abundant number, since it is smaller than the sum of its proper divisors (37037921780).

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

31553101420 is a wasteful number, since it uses less digits than its factorization.

31553101420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35458 (or 35456 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 31553101420 its reverse (2410135513), we get a palindrome (33963236933).

The spelling of 31553101420 in words is "thirty-one billion, five hundred fifty-three million, one hundred one thousand, four hundred twenty".