31433201040 has 160 divisors (see below), whose sum is σ = 100609560576. Its totient is φ = 8113029120.

The previous prime is 31433200963. The next prime is 31433201047. The reversal of 31433201040 is 4010233413.

It is a super-2 number, since 2×31433201040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31433200998 and 31433201016.

It is not an unprimeable number, because it can be changed into a prime (31433201047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1237104 + ... + 1262256.

Almost surely, 2^31433201040 is an apocalyptic number.

31433201040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31433201040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50304780288).

31433201040 is an abundant number, since it is smaller than the sum of its proper divisors (69176359536).

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

31433201040 is a wasteful number, since it uses less digits than its factorization.

31433201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25337 (or 25331 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31433201040 its reverse (4010233413), we get a palindrome (35443434453).

The spelling of 31433201040 in words is "thirty-one billion, four hundred thirty-three million, two hundred one thousand, forty".