31230240213400 has 24 divisors (see below), whose sum is σ = 72610308496620. Its totient is φ = 12492096085280.

The previous prime is 31230240213371. The next prime is 31230240213413. The reversal of 31230240213400 is 431204203213.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78075600334 + ... + 78075600733.

Almost surely, 2^{31230240213400} is an apocalyptic number.

It is an amenable number.

31230240213400 is an abundant number, since it is smaller than the sum of its proper divisors (41380068283220).

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

31230240213400 is a wasteful number, since it uses less digits than its factorization.

31230240213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156151201083 (or 156151201074 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31230240213400 its reverse (431204203213), we get a palindrome (31661444416613).

The spelling of 31230240213400 in words is "thirty-one trillion, two hundred thirty billion, two hundred forty million, two hundred thirteen thousand, four hundred".