31401200120331 has 16 divisors (see below), whose sum is σ = 44391094070400. Its totient is φ = 19676052459648.

The previous prime is 31401200120317. The next prime is 31401200120413. The reversal of 31401200120331 is 13302100210413.

It is not a de Polignac number, because 31401200120331 - 2⁶ = 31401200120267 is a prime.

It is a super-2 number, since 2×31401200120331² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31401200120298 and 31401200120307.

It is not an unprimeable number, because it can be changed into a prime (31401200120531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416545401 + ... + 416620778.

It is an arithmetic number, because the mean of its divisors is an integer number (2774443379400).

Almost surely, 2^{31401200120331} is an apocalyptic number.

31401200120331 is a deficient number, since it is larger than the sum of its proper divisors (12989893950069).

31401200120331 is a wasteful number, since it uses less digits than its factorization.

31401200120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833166938.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31401200120331 its reverse (13302100210413), we get a palindrome (44703300330744).

The spelling of 31401200120331 in words is "thirty-one trillion, four hundred one billion, two hundred million, one hundred twenty thousand, three hundred thirty-one".