31420426800 has 810 divisors, whose sum is σ = 127334833308. Its totient is φ = 6602158080.

The previous prime is 31420426789. The next prime is 31420426811. The reversal of 31420426800 is 862402413.

It is an interprime number because it is at equal distance from previous prime (31420426789) and next prime (31420426811).

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

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 730707579 + ... + 730707621.

Almost surely, 2^31420426800 is an apocalyptic number.

31420426800 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 31420426800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63667416654).

31420426800 is an abundant number, since it is smaller than the sum of its proper divisors (95914406508).

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

31420426800 is a wasteful number, since it uses less digits than its factorization.

31420426800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 77 counting only the distinct ones).

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

The spelling of 31420426800 in words is "thirty-one billion, four hundred twenty million, four hundred twenty-six thousand, eight hundred".