31411143402420 has 48 divisors (see below), whose sum is σ = 88212184377408. Its totient is φ = 8351449397760.

The previous prime is 31411143402361. The next prime is 31411143402427. The reversal of 31411143402420 is 2420434111413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31411143402427) 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, 776714286 + ... + 776754725.

It is an arithmetic number, because the mean of its divisors is an integer number (1837753841196).

Almost surely, 2^{31411143402420} is an apocalyptic number.

31411143402420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31411143402420 is an abundant number, since it is smaller than the sum of its proper divisors (56801040974988).

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

31411143402420 is a wasteful number, since it uses less digits than its factorization.

31411143402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553469360 (or 1553469358 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 31411143402420 its reverse (2420434111413), we get a palindrome (33831577513833).

The spelling of 31411143402420 in words is "thirty-one trillion, four hundred eleven billion, one hundred forty-three million, four hundred two thousand, four hundred twenty".