31401200 has 60 divisors (see below), whose sum is σ = 78071640. Its totient is φ = 12122880.

The previous prime is 31401199. The next prime is 31401211. The reversal of 31401200 is 210413.

It is a happy number.

It is a super-2 number, since 2×31401200² = 1972070722880000, which contains 22 as substring.

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, 10247 + ... + 12953.

It is an arithmetic number, because the mean of its divisors is an integer number (1301194).

Almost surely, 2^31401200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31401200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39035820).

31401200 is an abundant number, since it is smaller than the sum of its proper divisors (46670440).

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

31401200 is a wasteful number, since it uses less digits than its factorization.

31401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 31401200 is about 5603.6773640173. The cubic root of 31401200 is about 315.4874455336.

Adding to 31401200 its reverse (210413), we get a palindrome (31611613).

The spelling of 31401200 in words is "thirty-one million, four hundred one thousand, two hundred".