31621146150 has 192 divisors, whose sum is σ = 93160108800. Its totient is φ = 7011648000.

The previous prime is 31621146107. The next prime is 31621146197. The reversal of 31621146150 is 5164112613.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 891760 + ... + 926540.

It is an arithmetic number, because the mean of its divisors is an integer number (485208900).

Almost surely, 2^31621146150 is an apocalyptic number.

31621146150 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 31621146150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46580054400).

31621146150 is an abundant number, since it is smaller than the sum of its proper divisors (61538962650).

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

31621146150 is a wasteful number, since it uses less digits than its factorization.

31621146150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34855 (or 34850 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 31621146150 its reverse (5164112613), we get a palindrome (36785258763).

It can be divided in two parts, 31621 and 146150, that added together give a palindrome (177771).

The spelling of 31621146150 in words is "thirty-one billion, six hundred twenty-one million, one hundred forty-six thousand, one hundred fifty".