31450422040 has 32 divisors (see below), whose sum is σ = 70963944480. Its totient is φ = 12544525312.

The previous prime is 31450422013. The next prime is 31450422041. The reversal of 31450422040 is 4022405413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31450421996 and 31450422014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31450422041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099564 + ... + 1127803.

It is an arithmetic number, because the mean of its divisors is an integer number (2217623265).

Almost surely, 2^31450422040 is an apocalyptic number.

It is an amenable number.

31450422040 is an abundant number, since it is smaller than the sum of its proper divisors (39513522440).

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

31450422040 is a wasteful number, since it uses less digits than its factorization.

31450422040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227731 (or 2227727 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 31450422040 its reverse (4022405413), we get a palindrome (35472827453).

The spelling of 31450422040 in words is "thirty-one billion, four hundred fifty million, four hundred twenty-two thousand, forty".