31246069890 has 64 divisors (see below), whose sum is σ = 85719536640. Its totient is φ = 7140623040.

The previous prime is 31246069873. The next prime is 31246069913. The reversal of 31246069890 is 9896064213.

It is a super-2 number, since 2×31246069890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1505685 + ... + 1526295.

It is an arithmetic number, because the mean of its divisors is an integer number (1339367760).

Almost surely, 2^31246069890 is an apocalyptic number.

31246069890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31246069890 is an abundant number, since it is smaller than the sum of its proper divisors (54473466750).

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

31246069890 is a wasteful number, since it uses less digits than its factorization.

31246069890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27847.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 31246069890 in words is "thirty-one billion, two hundred forty-six million, sixty-nine thousand, eight hundred ninety".