31145140150 has 24 divisors (see below), whose sum is σ = 59927548320. Its totient is φ = 12028467360.

The previous prime is 31145140141. The next prime is 31145140163. The reversal of 31145140150 is 5104154113.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10738254 + ... + 10741153.

It is an arithmetic number, because the mean of its divisors is an integer number (2496981180).

Almost surely, 2^31145140150 is an apocalyptic number.

31145140150 is a deficient number, since it is larger than the sum of its proper divisors (28782408170).

31145140150 is a wasteful number, since it uses less digits than its factorization.

31145140150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21479448 (or 21479443 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 31145140150 its reverse (5104154113), we get a palindrome (36249294263).

The spelling of 31145140150 in words is "thirty-one billion, one hundred forty-five million, one hundred forty thousand, one hundred fifty".