31028501940 has 48 divisors (see below), whose sum is σ = 86929829952. Its totient is φ = 8269502976.

The previous prime is 31028501939. The next prime is 31028501941. The reversal of 31028501940 is 4910582013.

It is an interprime number because it is at equal distance from previous prime (31028501939) and next prime (31028501941).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31028501941) 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, 43189 + ... + 252828.

It is an arithmetic number, because the mean of its divisors is an integer number (1811038124).

Almost surely, 2^31028501940 is an apocalyptic number.

31028501940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31028501940 is an abundant number, since it is smaller than the sum of its proper divisors (55901328012).

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

31028501940 is a wasteful number, since it uses less digits than its factorization.

31028501940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297776 (or 297774 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 31028501940 in words is "thirty-one billion, twenty-eight million, five hundred one thousand, nine hundred forty".