31143455353052 has 96 divisors (see below), whose sum is σ = 65722640793600. Its totient is φ = 12614355052992.

The previous prime is 31143455353027. The next prime is 31143455353057. The reversal of 31143455353052 is 25035355434113.

It is a super-2 number, since 2×31143455353052² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31143455352994 and 31143455353012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143455353057) 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, 1217527199 + ... + 1217552777.

It is an arithmetic number, because the mean of its divisors is an integer number (684610841600).

Almost surely, 2^{31143455353052} 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 31143455353052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32861320396800).

31143455353052 is an abundant number, since it is smaller than the sum of its proper divisors (34579185440548).

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

31143455353052 is a wasteful number, since it uses less digits than its factorization.

31143455353052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31015 (or 31013 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 44.

The spelling of 31143455353052 in words is "thirty-one trillion, one hundred forty-three billion, four hundred fifty-five million, three hundred fifty-three thousand, fifty-two".